3120716391631 has 4 divisors (see below), whose sum is σ = 3128950472200. Its totient is φ = 3112482311064.

The previous prime is 3120716391619. The next prime is 3120716391659. The reversal of 3120716391631 is 1361936170213.

3120716391631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3120716391631 - 2²⁵ = 3120682837199 is a prime.

It is a super-2 number, since 2×3120716391631² (a number of 26 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 (3120716391431) 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, 4117039716 + ... + 4117040473.

It is an arithmetic number, because the mean of its divisors is an integer number (782237618050).

Almost surely, 2^{3120716391631} is an apocalyptic number.

3120716391631 is a deficient number, since it is larger than the sum of its proper divisors (8234080569).

3120716391631 is an equidigital number, since it uses as much as digits as its factorization.

3120716391631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8234080568.

The product of its (nonzero) digits is 122472, while the sum is 43.

The spelling of 3120716391631 in words is "three trillion, one hundred twenty billion, seven hundred sixteen million, three hundred ninety-one thousand, six hundred thirty-one".