313807891 has 8 divisors (see below), whose sum is σ = 322028784. Its totient is φ = 305614080.

The previous prime is 313807889. The next prime is 313807903. The reversal of 313807891 is 198708313.

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 313807891 - 2¹ = 313807889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313802891) 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, 17860 + ... + 30766.

It is an arithmetic number, because the mean of its divisors is an integer number (40253598).

Almost surely, 2^313807891 is an apocalyptic number.

313807891 is a deficient number, since it is larger than the sum of its proper divisors (8220893).

313807891 is a wasteful number, since it uses less digits than its factorization.

313807891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13541.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 313807891 is about 17714.6236482743. The cubic root of 313807891 is about 679.5497964370.

The spelling of 313807891 in words is "three hundred thirteen million, eight hundred seven thousand, eight hundred ninety-one".