31123232104 has 16 divisors (see below), whose sum is σ = 58467647520. Its totient is φ = 15531859440.

The previous prime is 31123232087. The next prime is 31123232123. The reversal of 31123232104 is 40123232113.

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, 3715132 + ... + 3723499.

It is an arithmetic number, because the mean of its divisors is an integer number (3654227970).

Almost surely, 2^31123232104 is an apocalyptic number.

It is an amenable number.

31123232104 is a deficient number, since it is larger than the sum of its proper divisors (27344415416).

31123232104 is a wasteful number, since it uses less digits than its factorization.

31123232104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7439160 (or 7439156 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31123232104 its reverse (40123232113), we get a palindrome (71246464217).

Subtracting 31123232104 from its reverse (40123232113), we obtain a palindrome (9000000009).

The spelling of 31123232104 in words is "thirty-one billion, one hundred twenty-three million, two hundred thirty-two thousand, one hundred four".