31040204013 has 48 divisors (see below), whose sum is σ = 55233360000. Its totient is φ = 16357790592.

The previous prime is 31040204011. The next prime is 31040204057.

31040204013 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31040204013 - 2¹ = 31040204011 is a prime.

It is a super-2 number, since 2×31040204013² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31040204011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 902863 + ... + 936611.

It is an arithmetic number, because the mean of its divisors is an integer number (1150695000).

Almost surely, 2^31040204013 is an apocalyptic number.

It is an amenable number.

31040204013 is a deficient number, since it is larger than the sum of its proper divisors (24193155987).

31040204013 is a wasteful number, since it uses less digits than its factorization.

31040204013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34898 (or 34895 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The spelling of 31040204013 in words is "thirty-one billion, forty million, two hundred four thousand, thirteen".