31020002131012 has 12 divisors (see below), whose sum is σ = 54343437539580. Its totient is φ = 15493305691136.

The previous prime is 31020002130973. The next prime is 31020002131031. The reversal of 31020002131012 is 21013120002013.

It can be written as a sum of positive squares in 2 ways, for example, as 15413978532096 + 15606023598916 = 3926064^2 + 3950446^2 .

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, 4173839413 + ... + 4173846844.

It is an arithmetic number, because the mean of its divisors is an integer number (4528619794965).

Almost surely, 2^{31020002131012} is an apocalyptic number.

It is an amenable number.

31020002131012 is a deficient number, since it is larger than the sum of its proper divisors (23323435408568).

31020002131012 is a wasteful number, since it uses less digits than its factorization.

31020002131012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8347687190 (or 8347687188 counting only the distinct ones).

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

Adding to 31020002131012 its reverse (21013120002013), we get a palindrome (52033122133025).

The spelling of 31020002131012 in words is "thirty-one trillion, twenty billion, two million, one hundred thirty-one thousand, twelve".