30975640031 has 12 divisors (see below), whose sum is σ = 36059440320. Its totient is φ = 26530983360.

The previous prime is 30975640027. The next prime is 30975640049. The reversal of 30975640031 is 13004657903.

It is a happy number.

It is not a de Polignac number, because 30975640031 - 2² = 30975640027 is a prime.

It is a super-2 number, since 2×30975640031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30975640001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165551 + ... + 298928.

It is an arithmetic number, because the mean of its divisors is an integer number (3004953360).

Almost surely, 2^30975640031 is an apocalyptic number.

30975640031 is a deficient number, since it is larger than the sum of its proper divisors (5083800289).

30975640031 is a wasteful number, since it uses less digits than its factorization.

30975640031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465854 (or 465847 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 38.

The spelling of 30975640031 in words is "thirty billion, nine hundred seventy-five million, six hundred forty thousand, thirty-one".