316542640631 has 4 divisors (see below), whose sum is σ = 361763017872. Its totient is φ = 271322263392.

The previous prime is 316542640597. The next prime is 316542640633. The reversal of 316542640631 is 136046245613.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 316542640631 - 2¹⁴ = 316542624247 is a prime.

It is a super-2 number, since 2×316542640631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316542640633) 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, 22610188610 + ... + 22610188623.

It is an arithmetic number, because the mean of its divisors is an integer number (90440754468).

Almost surely, 2^316542640631 is an apocalyptic number.

316542640631 is a deficient number, since it is larger than the sum of its proper divisors (45220377241).

316542640631 is an equidigital number, since it uses as much as digits as its factorization.

316542640631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45220377240.

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 316542640631 in words is "three hundred sixteen billion, five hundred forty-two million, six hundred forty thousand, six hundred thirty-one".