Search a number
-
+
30231321204 = 22371721170393
BaseRepresentation
bin11100001001111011…
…010101101001110100
32220000212120020102010
4130021323111221310
5443403204234304
621515454044220
72120105663460
oct341173255164
986025506363
1030231321204
111190387a087
125a384a9670
132b0a297856
14166b0614a0
15bbe0bd789
hex709ed5a74

30231321204 has 48 divisors (see below), whose sum is σ = 85359028608. Its totient is φ = 8129430528.

The previous prime is 30231321203. The next prime is 30231321217. The reversal of 30231321204 is 40212313203.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231321203) 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 15 ways as a sum of consecutive naturals, for example, 10583769 + ... + 10586624.

It is an arithmetic number, because the mean of its divisors is an integer number (1778313096).

Almost surely, 230231321204 is an apocalyptic number.

30231321204 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

30231321204 is an abundant number, since it is smaller than the sum of its proper divisors (55127707404).

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

30231321204 is a wasteful number, since it uses less digits than its factorization.

30231321204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21170424 (or 21170422 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 30231321204 its reverse (40212313203), we get a palindrome (70443634407).

The spelling of 30231321204 in words is "thirty billion, two hundred thirty-one million, three hundred twenty-one thousand, two hundred four".

Divisors: 1 2 3 4 6 7 12 14 17 21 28 34 42 51 68 84 102 119 204 238 357 476 714 1428 21170393 42340786 63511179 84681572 127022358 148192751 254044716 296385502 359896681 444578253 592771004 719793362 889156506 1079690043 1439586724 1778313012 2159380086 2519276767 4318760172 5038553534 7557830301 10077107068 15115660602 30231321204