313678691 has 4 divisors (see below), whose sum is σ = 314359584. Its totient is φ = 312997800.

The previous prime is 313678681. The next prime is 313678699. The reversal of 313678691 is 196876313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196876313 = 1567 ⋅125639.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313678691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313678699) 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, 339755 + ... + 340676.

It is an arithmetic number, because the mean of its divisors is an integer number (78589896).

Almost surely, 2^313678691 is an apocalyptic number.

313678691 is a deficient number, since it is larger than the sum of its proper divisors (680893).

313678691 is an equidigital number, since it uses as much as digits as its factorization.

313678691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680892.

The product of its digits is 163296, while the sum is 44.

The square root of 313678691 is about 17710.9765682189. The cubic root of 313678691 is about 679.4565229319.

The spelling of 313678691 in words is "three hundred thirteen million, six hundred seventy-eight thousand, six hundred ninety-one".