313691 has 8 divisors (see below), whose sum is σ = 367584. Its totient is φ = 262080.

The previous prime is 313679. The next prime is 313699. The reversal of 313691 is 196313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-313691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (313699) 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, 260 + ... + 833.

It is an arithmetic number, because the mean of its divisors is an integer number (45948).

2³¹³⁶⁹¹ is an apocalyptic number.

313691 is a deficient number, since it is larger than the sum of its proper divisors (53893).

313691 is a wasteful number, since it uses less digits than its factorization.

313691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141.

The product of its digits is 486, while the sum is 23.

The square root of 313691 is about 560.0812441066. The cubic root of 313691 is about 67.9465410286.

The spelling of 313691 in words is "three hundred thirteen thousand, six hundred ninety-one".