313616431 has 4 divisors (see below), whose sum is σ = 327251952. Its totient is φ = 299980912.

The previous prime is 313616419. The next prime is 313616437. The reversal of 313616431 is 134616313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134616313 = 13 ⋅10355101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313616431 is a prime.

It is a super-2 number, since 2×313616431² = 196710531586355522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 313616431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313616437) 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, 6817726 + ... + 6817771.

It is an arithmetic number, because the mean of its divisors is an integer number (81812988).

Almost surely, 2^313616431 is an apocalyptic number.

313616431 is a deficient number, since it is larger than the sum of its proper divisors (13635521).

313616431 is a wasteful number, since it uses less digits than its factorization.

313616431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13635520.

The product of its digits is 3888, while the sum is 28.

The square root of 313616431 is about 17709.2188139398. The cubic root of 313616431 is about 679.4115663533.

The spelling of 313616431 in words is "three hundred thirteen million, six hundred sixteen thousand, four hundred thirty-one".