111636801131 has 4 divisors (see below), whose sum is σ = 111651309000. Its totient is φ = 111622293264.

The previous prime is 111636801091. The next prime is 111636801137. The reversal of 111636801131 is 131108636111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111636801131 is a prime.

It is a super-2 number, since 2×111636801131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111636801137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7242386 + ... + 7257783.

It is an arithmetic number, because the mean of its divisors is an integer number (27912827250).

Almost surely, 2^111636801131 is an apocalyptic number.

111636801131 is a deficient number, since it is larger than the sum of its proper divisors (14507869).

111636801131 is an equidigital number, since it uses as much as digits as its factorization.

111636801131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14507868.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 111636801131 in words is "one hundred eleven billion, six hundred thirty-six million, eight hundred one thousand, one hundred thirty-one".