31003013012 has 6 divisors (see below), whose sum is σ = 54255272778. Its totient is φ = 15501506504.

The previous prime is 31003013003. The next prime is 31003013059. The reversal of 31003013012 is 21031030013.

It can be written as a sum of positive squares in only one way, i.e., 30494239876 + 508773136 = 174626^2 + 22556^2 .

It is a super-2 number, since 2×31003013012² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3875376623 + ... + 3875376630.

It is an arithmetic number, because the mean of its divisors is an integer number (9042545463).

Almost surely, 2^31003013012 is an apocalyptic number.

It is an amenable number.

31003013012 is a deficient number, since it is larger than the sum of its proper divisors (23252259766).

31003013012 is a wasteful number, since it uses less digits than its factorization.

31003013012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7750753257 (or 7750753255 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 31003013012 its reverse (21031030013), we get a palindrome (52034043025).

The spelling of 31003013012 in words is "thirty-one billion, three million, thirteen thousand, twelve".