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30996506879 = 1310733222151
BaseRepresentation
bin11100110111100010…
…010010100011111111
32222000012101200211022
4130313202102203333
51001440101210004
622123430414355
72145056650502
oct346742224377
988005350738
1030996506879
11121667a1438
1260108013bb
132bcc97b340
141700927139
15c1636a2be
hex7378928ff

30996506879 has 8 divisors (see below), whose sum is σ = 33384113952. Its totient is φ = 28609365600.

The previous prime is 30996506813. The next prime is 30996506887. The reversal of 30996506879 is 97860569903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30996506879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30996506179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28454 + ... + 250604.

It is an arithmetic number, because the mean of its divisors is an integer number (4173014244).

Almost surely, 230996506879 is an apocalyptic number.

30996506879 is a deficient number, since it is larger than the sum of its proper divisors (2387607073).

30996506879 is a wasteful number, since it uses less digits than its factorization.

30996506879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232897.

The product of its (nonzero) digits is 22044960, while the sum is 62.

The spelling of 30996506879 in words is "thirty billion, nine hundred ninety-six million, five hundred six thousand, eight hundred seventy-nine".

Divisors: 1 13 10733 139529 222151 2887963 2384346683 30996506879