2515312131 has 64 divisors (see below), whose sum is σ = 3870720000. Its totient is φ = 1444227840.

The previous prime is 2515312127. The next prime is 2515312139. The reversal of 2515312131 is 1312135152.

2515312131 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2515312131 - 2² = 2515312127 is a prime.

It is a super-2 number, since 2×2515312131² = 12653590232711522322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2515312139) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2397295 + ... + 2398343.

It is an arithmetic number, because the mean of its divisors is an integer number (60480000).

Almost surely, 2^2515312131 is an apocalyptic number.

2515312131 is a deficient number, since it is larger than the sum of its proper divisors (1355407869).

2515312131 is a wasteful number, since it uses less digits than its factorization.

2515312131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184.

The product of its digits is 900, while the sum is 24.

The square root of 2515312131 is about 50152.8875639280. The cubic root of 2515312131 is about 1359.9740715573.

Adding to 2515312131 its reverse (1312135152), we get a palindrome (3827447283).

The spelling of 2515312131 in words is "two billion, five hundred fifteen million, three hundred twelve thousand, one hundred thirty-one".