31023211012 has 24 divisors (see below), whose sum is σ = 55624060800. Its totient is φ = 15133893216.

The previous prime is 31023210997. The next prime is 31023211103. The reversal of 31023211012 is 21011232013.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370812 + ... + 446707.

It is an arithmetic number, because the mean of its divisors is an integer number (2317669200).

Almost surely, 2^31023211012 is an apocalyptic number.

It is an amenable number.

31023211012 is a deficient number, since it is larger than the sum of its proper divisors (24600849788).

31023211012 is a wasteful number, since it uses less digits than its factorization.

31023211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817755 (or 817753 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31023211012 its reverse (21011232013), we get a palindrome (52034443025).

The spelling of 31023211012 in words is "thirty-one billion, twenty-three million, two hundred eleven thousand, twelve".