315791 has 8 divisors (see below), whose sum is σ = 364320. Its totient is φ = 268128.

The previous prime is 315779. The next prime is 315803. The reversal of 315791 is 197513.

It is an interprime number because it is at equal distance from previous prime (315779) and next prime (315803).

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-315791 is a prime.

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 315791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315701) 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, 1265 + ... + 1493.

It is an arithmetic number, because the mean of its divisors is an integer number (45540).

2³¹⁵⁷⁹¹ is an apocalyptic number.

315791 is a deficient number, since it is larger than the sum of its proper divisors (48529).

315791 is a wasteful number, since it uses less digits than its factorization.

315791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433.

The product of its digits is 945, while the sum is 26.

The square root of 315791 is about 561.9528449968. The cubic root of 315791 is about 68.0978263254.

The spelling of 315791 in words is "three hundred fifteen thousand, seven hundred ninety-one".