313932581557 has 24 divisors (see below), whose sum is σ = 374505138176. Its totient is φ = 257759941824.

The previous prime is 313932581537. The next prime is 313932581561. The reversal of 313932581557 is 755185239313.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-313932581557 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 (313932581537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 537703 + ... + 957595.

Almost surely, 2^313932581557 is an apocalyptic number.

It is an amenable number.

313932581557 is a deficient number, since it is larger than the sum of its proper divisors (60572556619).

313932581557 is a wasteful number, since it uses less digits than its factorization.

313932581557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420085 (or 420056 counting only the distinct ones).

The product of its digits is 3402000, while the sum is 52.

The spelling of 313932581557 in words is "three hundred thirteen billion, nine hundred thirty-two million, five hundred eighty-one thousand, five hundred fifty-seven".