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230121231030 = 232510188728541
BaseRepresentation
bin1101011001010001001…
…0110101001010110110
3210222222112200202120200
43112110102311022312
512232242013343110
6253414412341330
722424422122045
oct3262422651266
9728875622520
10230121231030
1189659487969
1238723174846
131891484c5c2
14b1d068655c
155ebca486c0
hex35944b52b6

230121231030 has 96 divisors (see below), whose sum is σ = 604941524928. Its totient is φ = 60687456000.

The previous prime is 230121230897. The next prime is 230121231031. The reversal of 230121231030 is 30132121032.

230121231030 is a `hidden beast` number, since 2 + 301 + 21 + 2 + 310 + 30 = 666.

230121231030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 230121230994 and 230121231012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230121231031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8048560 + ... + 8077100.

It is an arithmetic number, because the mean of its divisors is an integer number (6301474218).

Almost surely, 2230121231030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 230121231030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302470762464).

230121231030 is an abundant number, since it is smaller than the sum of its proper divisors (374820293898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230121231030 is a wasteful number, since it uses less digits than its factorization.

230121231030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29542 (or 29539 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 230121231030 its reverse (30132121032), we get a palindrome (260253352062).

The spelling of 230121231030 in words is "two hundred thirty billion, one hundred twenty-one million, two hundred thirty-one thousand, thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 101 202 303 505 606 887 909 1010 1515 1774 1818 2661 3030 4435 4545 5322 7983 8870 9090 13305 15966 26610 28541 39915 57082 79830 85623 89587 142705 171246 179174 256869 268761 285410 428115 447935 513738 537522 806283 856230 895870 1284345 1343805 1612566 2568690 2687610 2882641 4031415 5765282 8062830 8647923 14413205 17295846 25315867 25943769 28826410 43239615 50631734 51887538 75947601 86479230 126579335 129718845 151895202 227842803 253158670 259437690 379738005 455685606 759476010 1139214015 2278428030 2556902567 5113805134 7670707701 12784512835 15341415402 23012123103 25569025670 38353538505 46024246206 76707077010 115060615515 230121231030