31210553012 has 12 divisors (see below), whose sum is σ = 54619716900. Its totient is φ = 15604919616.

The previous prime is 31210552987. The next prime is 31210553039. The reversal of 31210553012 is 21035501213.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30648104356 + 562448656 = 175066^2 + 23716^2 .

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, 255698 + ... + 357494.

It is an arithmetic number, because the mean of its divisors is an integer number (4551643075).

Almost surely, 2^31210553012 is an apocalyptic number.

It is an amenable number.

31210553012 is a deficient number, since it is larger than the sum of its proper divisors (23409163888).

31210553012 is a wasteful number, since it uses less digits than its factorization.

31210553012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178450 (or 178448 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The spelling of 31210553012 in words is "thirty-one billion, two hundred ten million, five hundred fifty-three thousand, twelve".