313721217426631 has 8 divisors (see below), whose sum is σ = 359096136904064. Its totient is φ = 268485698624760.

The previous prime is 313721217426599. The next prime is 313721217426653. The reversal of 313721217426631 is 136624712127313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 313721217426631 - 2⁵ = 313721217426599 is a prime.

It is a super-2 number, since 2×313721217426631² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313721217426131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34850164065 + ... + 34850173066.

It is an arithmetic number, because the mean of its divisors is an integer number (44887017113008).

Almost surely, 2^{313721217426631} is an apocalyptic number.

313721217426631 is a deficient number, since it is larger than the sum of its proper divisors (45374919477433).

313721217426631 is an equidigital number, since it uses as much as digits as its factorization.

313721217426631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69700337781.

The product of its digits is 1524096, while the sum is 49.

The spelling of 313721217426631 in words is "three hundred thirteen trillion, seven hundred twenty-one billion, two hundred seventeen million, four hundred twenty-six thousand, six hundred thirty-one".