31000431004 has 6 divisors (see below), whose sum is σ = 54250754264. Its totient is φ = 15500215500.

The previous prime is 31000430999. The next prime is 31000431013. The reversal of 31000431004 is 40013400013.

It is a super-2 number, since 2×31000431004² (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, 3875053872 + ... + 3875053879.

Almost surely, 2^31000431004 is an apocalyptic number.

It is an amenable number.

31000431004 is a deficient number, since it is larger than the sum of its proper divisors (23250323260).

31000431004 is a wasteful number, since it uses less digits than its factorization.

31000431004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7750107755 (or 7750107753 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31000431004 its reverse (40013400013), we get a palindrome (71013831017).

The spelling of 31000431004 in words is "thirty-one billion, four hundred thirty-one thousand, four".