31312122004 has 12 divisors (see below), whose sum is σ = 55132387744. Its totient is φ = 15560011224.

The previous prime is 31312121983. The next prime is 31312122019. The reversal of 31312122004 is 40022121313.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24011712 + ... + 24013015.

Almost surely, 2^31312122004 is an apocalyptic number.

It is an amenable number.

31312122004 is a deficient number, since it is larger than the sum of its proper divisors (23820265740).

31312122004 is a wasteful number, since it uses less digits than its factorization.

31312122004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48024894 (or 48024892 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31312122004 its reverse (40022121313), we get a palindrome (71334243317).

The spelling of 31312122004 in words is "thirty-one billion, three hundred twelve million, one hundred twenty-two thousand, four".