31614641613 has 6 divisors (see below), whose sum is σ = 45665593454. Its totient is φ = 21076427736.

The previous prime is 31614641609. The next prime is 31614641629.

31614641613 is a `hidden beast` number, since 3 + 1 + 6 + 1 + 4 + 641 + 6 + 1 + 3 = 666.

31614641613 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 24038331849 + 7576309764 = 155043^2 + 87042^2 .

It is not a de Polignac number, because 31614641613 - 2² = 31614641609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31614641683) 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, 1756368970 + ... + 1756368987.

Almost surely, 2^31614641613 is an apocalyptic number.

It is an amenable number.

31614641613 is a deficient number, since it is larger than the sum of its proper divisors (14050951841).

31614641613 is a wasteful number, since it uses less digits than its factorization.

31614641613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3512737963 (or 3512737960 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The spelling of 31614641613 in words is "thirty-one billion, six hundred fourteen million, six hundred forty-one thousand, six hundred thirteen".