316377561 has 4 divisors (see below), whose sum is σ = 421836752. Its totient is φ = 210918372.

The previous prime is 316377527. The next prime is 316377577. The reversal of 316377561 is 165773613.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 316377561 - 2¹³ = 316369369 is a prime.

It is a super-2 number, since 2×316377561² = 200189522208617442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316377461) 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, 52729591 + ... + 52729596.

It is an arithmetic number, because the mean of its divisors is an integer number (105459188).

Almost surely, 2^316377561 is an apocalyptic number.

It is an amenable number.

316377561 is a deficient number, since it is larger than the sum of its proper divisors (105459191).

316377561 is a wasteful number, since it uses less digits than its factorization.

316377561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105459190.

The product of its digits is 79380, while the sum is 39.

The square root of 316377561 is about 17787.0053971994. The cubic root of 316377561 is about 681.3996265794.

The spelling of 316377561 in words is "three hundred sixteen million, three hundred seventy-seven thousand, five hundred sixty-one".