12131130515 has 32 divisors (see below), whose sum is σ = 17012799360. Its totient is φ = 8131728384.

The previous prime is 12131130509. The next prime is 12131130527. The reversal of 12131130515 is 51503113121.

It is a cyclic number.

It is not a de Polignac number, because 12131130515 - 2⁸ = 12131130259 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 502031 + ... + 525639.

It is an arithmetic number, because the mean of its divisors is an integer number (531649980).

Almost surely, 2^12131130515 is an apocalyptic number.

12131130515 is a deficient number, since it is larger than the sum of its proper divisors (4881668845).

12131130515 is a wasteful number, since it uses less digits than its factorization.

12131130515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23951.

The product of its (nonzero) digits is 450, while the sum is 23.

Adding to 12131130515 its reverse (51503113121), we get a palindrome (63634243636).

The spelling of 12131130515 in words is "twelve billion, one hundred thirty-one million, one hundred thirty thousand, five hundred fifteen".