11542692731 has 16 divisors (see below), whose sum is σ = 12130661088. Its totient is φ = 10972780800.

The previous prime is 11542692709. The next prime is 11542692769. The reversal of 11542692731 is 13729624511.

It is a de Polignac number, because none of the positive numbers 2^k-11542692731 is a prime.

It is a super-2 number, since 2×11542692731² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11542692131) 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, 246041 + ... + 289173.

It is an arithmetic number, because the mean of its divisors is an integer number (758166318).

Almost surely, 2^11542692731 is an apocalyptic number.

11542692731 is a deficient number, since it is larger than the sum of its proper divisors (587968357).

11542692731 is a wasteful number, since it uses less digits than its factorization.

11542692731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43342.

The product of its digits is 90720, while the sum is 41.

The spelling of 11542692731 in words is "eleven billion, five hundred forty-two million, six hundred ninety-two thousand, seven hundred thirty-one".