31566700991053 has 4 divisors (see below), whose sum is σ = 31630991624928. Its totient is φ = 31502410357180.

The previous prime is 31566700991011. The next prime is 31566700991081. The reversal of 31566700991053 is 35019900766513.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31566700991053 is a prime.

It is a super-3 number, since 3×31566700991053³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31566700990985 and 31566700991003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31566700991453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32145316201 + ... + 32145317182.

It is an arithmetic number, because the mean of its divisors is an integer number (7907747906232).

Almost surely, 2^{31566700991053} is an apocalyptic number.

It is an amenable number.

31566700991053 is a deficient number, since it is larger than the sum of its proper divisors (64290633875).

31566700991053 is an equidigital number, since it uses as much as digits as its factorization.

31566700991053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64290633874.

The product of its (nonzero) digits is 4592700, while the sum is 55.

The spelling of 31566700991053 in words is "thirty-one trillion, five hundred sixty-six billion, seven hundred million, nine hundred ninety-one thousand, fifty-three".