1315441531 has 16 divisors (see below), whose sum is σ = 1357297344. Its totient is φ = 1274448384.

The previous prime is 1315441529. The next prime is 1315441549. The reversal of 1315441531 is 1351445131.

It is a cyclic number.

It is not a de Polignac number, because 1315441531 - 2¹ = 1315441529 is a prime.

It is a super-2 number, since 2×1315441531² = 3460772842959247922, which contains 22 as substring.

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 1315441531.

It is not an unprimeable number, because it can be changed into a prime (1315441511) 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, 1029465 + ... + 1030741.

It is an arithmetic number, because the mean of its divisors is an integer number (84831084).

Almost surely, 2^1315441531 is an apocalyptic number.

1315441531 is a deficient number, since it is larger than the sum of its proper divisors (41855813).

1315441531 is a wasteful number, since it uses less digits than its factorization.

1315441531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590.

The product of its digits is 3600, while the sum is 28.

The square root of 1315441531 is about 36269.0161294734. The cubic root of 1315441531 is about 1095.6971106446.

Adding to 1315441531 its product of digits (3600), we get a palindrome (1315445131).

Adding to 1315441531 its reverse (1351445131), we get a palindrome (2666886662).

The spelling of 1315441531 in words is "one billion, three hundred fifteen million, four hundred forty-one thousand, five hundred thirty-one".