1315213431 has 16 divisors (see below), whose sum is σ = 2026656000. Its totient is φ = 743105088.

The previous prime is 1315213411. The next prime is 1315213453. The reversal of 1315213431 is 1343125131.

It is not a de Polignac number, because 1315213431 - 2¹⁰ = 1315212407 is a prime.

It is a super-2 number, since 2×1315213431² = 3459572738165583522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315213411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349981 + ... + 353718.

It is an arithmetic number, because the mean of its divisors is an integer number (126666000).

Almost surely, 2^1315213431 is an apocalyptic number.

1315213431 is a deficient number, since it is larger than the sum of its proper divisors (711442569).

1315213431 is an equidigital number, since it uses as much as digits as its factorization.

1315213431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703798.

The product of its digits is 1080, while the sum is 24.

The square root of 1315213431 is about 36265.8714358279. The cubic root of 1315213431 is about 1095.6337750136.

Adding to 1315213431 its reverse (1343125131), we get a palindrome (2658338562).

The spelling of 1315213431 in words is "one billion, three hundred fifteen million, two hundred thirteen thousand, four hundred thirty-one".