111301312131 has 12 divisors (see below), whose sum is σ = 161036071560. Its totient is φ = 74077408800.

The previous prime is 111301312099. The next prime is 111301312159. The reversal of 111301312131 is 131213103111.

It is not a de Polignac number, because 111301312131 - 2⁵ = 111301312099 is a prime.

It is a super-2 number, since 2×111301312131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111301312231) 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 11 ways as a sum of consecutive naturals, for example, 10283121 + ... + 10293938.

It is an arithmetic number, because the mean of its divisors is an integer number (13419672630).

Almost surely, 2^111301312131 is an apocalyptic number.

111301312131 is a deficient number, since it is larger than the sum of its proper divisors (49734759429).

111301312131 is a wasteful number, since it uses less digits than its factorization.

111301312131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20577666 (or 20577663 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 111301312131 its reverse (131213103111), we get a palindrome (242514415242).

The spelling of 111301312131 in words is "one hundred eleven billion, three hundred one million, three hundred twelve thousand, one hundred thirty-one".