1315431 has 12 divisors (see below), whose sum is σ = 2046408. Its totient is φ = 809424.

The previous prime is 1315399. The next prime is 1315441. The reversal of 1315431 is 1345131.

It is not a de Polignac number, because 1315431 - 2⁵ = 1315399 is a prime.

It is a super-2 number, since 2×1315431² = 3460717431522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5505 + ... + 5738.

It is an arithmetic number, because the mean of its divisors is an integer number (170534).

2^1315431 is an apocalyptic number.

1315431 is a deficient number, since it is larger than the sum of its proper divisors (730977).

1315431 is a wasteful number, since it uses less digits than its factorization.

1315431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11262 (or 11259 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 1315431 is about 1146.9224036525. The cubic root of 1315431 is about 109.5694186704.

The spelling of 1315431 in words is "one million, three hundred fifteen thousand, four hundred thirty-one".