315591 has 8 divisors (see below), whose sum is σ = 428160. Its totient is φ = 206712.

The previous prime is 315589. The next prime is 315593. The reversal of 315591 is 195513.

It is an interprime number because it is at equal distance from previous prime (315589) and next prime (315593).

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

It is not a de Polignac number, because 315591 - 2¹ = 315589 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 315591.

It is not an unprimeable number, because it can be changed into a prime (315593) 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, 715 + ... + 1068.

It is an arithmetic number, because the mean of its divisors is an integer number (53520).

2³¹⁵⁵⁹¹ is an apocalyptic number.

315591 is a deficient number, since it is larger than the sum of its proper divisors (112569).

315591 is a wasteful number, since it uses less digits than its factorization.

315591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845.

The product of its digits is 675, while the sum is 24.

The square root of 315591 is about 561.7748659383. The cubic root of 315591 is about 68.0834471511.

Adding to 315591 its sum of digits (24), we get a triangular number (315615 = T₇₉₄).

The spelling of 315591 in words is "three hundred fifteen thousand, five hundred ninety-one".