31004013042 has 24 divisors (see below), whose sum is σ = 69491754540. Its totient is φ = 9978302880.

The previous prime is 31004012971. The next prime is 31004013067. The reversal of 31004013042 is 24031040013.

It can be written as a sum of positive squares in 2 ways, for example, as 27879314841 + 3124698201 = 166971^2 + 55899^2 .

It is a super-2 number, since 2×31004013042² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29696809 + ... + 29697852.

Almost surely, 2^31004013042 is an apocalyptic number.

31004013042 is an abundant number, since it is smaller than the sum of its proper divisors (38487741498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31004013042 is a wasteful number, since it uses less digits than its factorization.

31004013042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59394698 (or 59394695 counting only the distinct ones).

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

Adding to 31004013042 its reverse (24031040013), we get a palindrome (55035053055).

The spelling of 31004013042 in words is "thirty-one billion, four million, thirteen thousand, forty-two".