31866529774113 has 6 divisors (see below), whose sum is σ = 46029431895954. Its totient is φ = 21244353182736.

The previous prime is 31866529774109. The next prime is 31866529774127. The reversal of 31866529774113 is 31147792566813.

31866529774113 is a `hidden beast` number, since 3 + 1 + 8 + 66 + 529 + 7 + 7 + 41 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 29844991785249 + 2021537988864 = 5463057^2 + 1421808^2 .

It is not a de Polignac number, because 31866529774113 - 2² = 31866529774109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31866529734113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1770362765220 + ... + 1770362765237.

It is an arithmetic number, because the mean of its divisors is an integer number (7671571982659).

Almost surely, 2^{31866529774113} is an apocalyptic number.

It is an amenable number.

31866529774113 is a deficient number, since it is larger than the sum of its proper divisors (14162902121841).

31866529774113 is a wasteful number, since it uses less digits than its factorization.

31866529774113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3540725530463 (or 3540725530460 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 63.

The spelling of 31866529774113 in words is "thirty-one trillion, eight hundred sixty-six billion, five hundred twenty-nine million, seven hundred seventy-four thousand, one hundred thirteen".