30975396881 has 32 divisors (see below), whose sum is σ = 38438400000. Its totient is φ = 24569697600.

The previous prime is 30975396871. The next prime is 30975396961. The reversal of 30975396881 is 18869357903.

It is a cyclic number.

It is not a de Polignac number, because 30975396881 - 2¹⁸ = 30975134737 is a prime.

It is a super-2 number, since 2×30975396881² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30975396881.

It is not an unprimeable number, because it can be changed into a prime (30975396821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109370 + ... + 271868.

It is an arithmetic number, because the mean of its divisors is an integer number (1201200000).

Almost surely, 2^30975396881 is an apocalyptic number.

30975396881 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30975396881 is a deficient number, since it is larger than the sum of its proper divisors (7463003119).

30975396881 is a wasteful number, since it uses less digits than its factorization.

30975396881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162597.

The product of its (nonzero) digits is 9797760, while the sum is 59.

The spelling of 30975396881 in words is "thirty billion, nine hundred seventy-five million, three hundred ninety-six thousand, eight hundred eighty-one".