313725861 has 6 divisors (see below), whose sum is σ = 453159590. Its totient is φ = 209150568.

The previous prime is 313725851. The next prime is 313725899. The reversal of 313725861 is 168527313.

313725861 is a `hidden beast` number, since 3 + 1 + 3 + 72 + 586 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 207532836 + 106193025 = 14406^2 + 10305^2 .

It is not a de Polignac number, because 313725861 - 2⁵ = 313725829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313725821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17429206 + ... + 17429223.

Almost surely, 2^313725861 is an apocalyptic number.

It is an amenable number.

313725861 is a deficient number, since it is larger than the sum of its proper divisors (139433729).

313725861 is a wasteful number, since it uses less digits than its factorization.

313725861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34858435 (or 34858432 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 313725861 is about 17712.3081782133. The cubic root of 313725861 is about 679.4905793924.

The spelling of 313725861 in words is "three hundred thirteen million, seven hundred twenty-five thousand, eight hundred sixty-one".