1315331 has 4 divisors (see below), whose sum is σ = 1330200. Its totient is φ = 1300464.

The previous prime is 1315309. The next prime is 1315367. The reversal of 1315331 is 1335131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1315331 is a prime.

It is a super-2 number, since 2×1315331² = 3460191279122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315231) 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, 7301 + ... + 7478.

It is an arithmetic number, because the mean of its divisors is an integer number (332550).

2^1315331 is an apocalyptic number.

1315331 is a deficient number, since it is larger than the sum of its proper divisors (14869).

1315331 is an equidigital number, since it uses as much as digits as its factorization.

1315331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14868.

The product of its digits is 135, while the sum is 17.

The square root of 1315331 is about 1146.8788078956. The cubic root of 1315331 is about 109.5666420850.

The spelling of 1315331 in words is "one million, three hundred fifteen thousand, three hundred thirty-one".