11507512131 has 28 divisors (see below), whose sum is σ = 17267056608. Its totient is φ = 7665592464.

The previous prime is 11507512097. The next prime is 11507512141. The reversal of 11507512131 is 13121570511.

11507512131 is a `hidden beast` number, since 1 + 1 + 507 + 5 + 121 + 31 = 666.

It is not a de Polignac number, because 11507512131 - 2⁹ = 11507511619 is a prime.

It is a super-2 number, since 2×11507512131² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 11507512095 and 11507512104.

It is not an unprimeable number, because it can be changed into a prime (11507512141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1031821 + ... + 1042913.

Almost surely, 2^11507512131 is an apocalyptic number.

11507512131 is a deficient number, since it is larger than the sum of its proper divisors (5759544477).

11507512131 is an equidigital number, since it uses as much as digits as its factorization.

11507512131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12534 (or 12519 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 27.

The spelling of 11507512131 in words is "eleven billion, five hundred seven million, five hundred twelve thousand, one hundred thirty-one".