31386350844405 has 48 divisors (see below), whose sum is σ = 54592612729200. Its totient is φ = 16681140854784.

The previous prime is 31386350844367. The next prime is 31386350844439. The reversal of 31386350844405 is 50444805368313.

31386350844405 is a `hidden beast` number, since 3 + 1 + 38 + 63 + 508 + 4 + 4 + 40 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 160763308209 + 31225587536196 = 400953^2 + 5587986^2 .

It is not a de Polignac number, because 31386350844405 - 2³⁰ = 31385277102581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15128859 + ... + 17077911.

It is an arithmetic number, because the mean of its divisors is an integer number (1137346098525).

Almost surely, 2^{31386350844405} is an apocalyptic number.

It is an amenable number.

31386350844405 is a deficient number, since it is larger than the sum of its proper divisors (23206261884795).

31386350844405 is a wasteful number, since it uses less digits than its factorization.

31386350844405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950310 (or 1950307 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 54.

The spelling of 31386350844405 in words is "thirty-one trillion, three hundred eighty-six billion, three hundred fifty million, eight hundred forty-four thousand, four hundred five".