Search a number
-
+
30211111210 = 2572139944071
BaseRepresentation
bin11100001000101110…
…001111100100101010
32212222110112110111211
4130020232033210222
5443333021024320
621513452543334
72116442131300
oct341056174452
985873473454
1030211111210
11118a3426005
125a31781b4a
132b0603c987
1416684c0270
15bbc42a55a
hex708b8f92a

30211111210 has 48 divisors (see below), whose sum is σ = 63305020800. Its totient is φ = 10350456480.

The previous prime is 30211111193. The next prime is 30211111241. The reversal of 30211111210 is 1211111203.

It is a happy number.

It is a super-2 number, since 2×302111112102 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 663475 + ... + 707545.

It is an arithmetic number, because the mean of its divisors is an integer number (1318854600).

Almost surely, 230211111210 is an apocalyptic number.

30211111210 is an abundant number, since it is smaller than the sum of its proper divisors (33093909590).

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

30211111210 is a wasteful number, since it uses less digits than its factorization.

30211111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45491 (or 45484 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 30211111210 its reverse (1211111203), we get a palindrome (31422222413).

The spelling of 30211111210 in words is "thirty billion, two hundred eleven million, one hundred eleven thousand, two hundred ten".

Divisors: 1 2 5 7 10 14 35 49 70 98 245 490 1399 2798 6995 9793 13990 19586 44071 48965 68551 88142 97930 137102 220355 308497 342755 440710 616994 685510 1542485 2159479 3084970 4318958 10797395 21594790 61655329 123310658 308276645 431587303 616553290 863174606 2157936515 3021111121 4315873030 6042222242 15105555605 30211111210