31020012102 has 16 divisors (see below), whose sum is σ = 62492872752. Its totient is φ = 10264529280.

The previous prime is 31020012073. The next prime is 31020012151. The reversal of 31020012102 is 20121002013.

It is a congruent number.

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, 18867799 + ... + 18869442.

It is an arithmetic number, because the mean of its divisors is an integer number (3905804547).

Almost surely, 2^31020012102 is an apocalyptic number.

31020012102 is an abundant number, since it is smaller than the sum of its proper divisors (31472860650).

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

31020012102 is a wasteful number, since it uses less digits than its factorization.

31020012102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37737383.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 31020012102 its reverse (20121002013), we get a palindrome (51141014115).

The spelling of 31020012102 in words is "thirty-one billion, twenty million, twelve thousand, one hundred two".