11386534131 has 12 divisors (see below), whose sum is σ = 18796818352. Its totient is φ = 6506590896.

The previous prime is 11386534129. The next prime is 11386534139. The reversal of 11386534131 is 13143568311.

11386534131 is a `hidden beast` number, since 1 + 13 + 86 + 534 + 1 + 31 = 666.

It is not a de Polignac number, because 11386534131 - 2¹ = 11386534129 is a prime.

It is a super-2 number, since 2×11386534131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11386534139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90369256 + ... + 90369381.

Almost surely, 2^11386534131 is an apocalyptic number.

11386534131 is a deficient number, since it is larger than the sum of its proper divisors (7410284221).

11386534131 is a wasteful number, since it uses less digits than its factorization.

11386534131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180738650 (or 180738647 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The spelling of 11386534131 in words is "eleven billion, three hundred eighty-six million, five hundred thirty-four thousand, one hundred thirty-one".