31386685037764 has 24 divisors (see below), whose sum is σ = 62774526600128. Its totient is φ = 13451188618080.

The previous prime is 31386685037713. The next prime is 31386685037789. The reversal of 31386685037764 is 46773058668313.

It is a super-3 number, since 3×31386685037764³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 31386685037764.

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, 8775114 + ... + 11822689.

Almost surely, 2^{31386685037764} is an apocalyptic number.

It is an amenable number.

31386685037764 is an abundant number, since it is smaller than the sum of its proper divisors (31387841562364).

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

31386685037764 is a wasteful number, since it uses less digits than its factorization.

31386685037764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20652235 (or 20652233 counting only the distinct ones).

The product of its (nonzero) digits is 365783040, while the sum is 67.

The spelling of 31386685037764 in words is "thirty-one trillion, three hundred eighty-six billion, six hundred eighty-five million, thirty-seven thousand, seven hundred sixty-four".