31331383630836 has 48 divisors (see below), whose sum is σ = 73929306528000. Its totient is φ = 10326263782912.

The previous prime is 31331383630763. The next prime is 31331383630889. The reversal of 31331383630836 is 63803638313313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67693096 + ... + 68154368.

It is an arithmetic number, because the mean of its divisors is an integer number (1540193886000).

Almost surely, 2^{31331383630836} is an apocalyptic number.

It is an amenable number.

31331383630836 is an abundant number, since it is smaller than the sum of its proper divisors (42597922897164).

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

31331383630836 is a wasteful number, since it uses less digits than its factorization.

31331383630836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524968 (or 524966 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 51.

The spelling of 31331383630836 in words is "thirty-one trillion, three hundred thirty-one billion, three hundred eighty-three million, six hundred thirty thousand, eight hundred thirty-six".