23100111131 has 4 divisors (see below), whose sum is σ = 23183505312. Its totient is φ = 23016716952.

The previous prime is 23100111127. The next prime is 23100111143. The reversal of 23100111131 is 13111100132.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 23100111131 - 2² = 23100111127 is a prime.

It is a super-2 number, since 2×23100111131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23100111101) 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, 41696675 + ... + 41697228.

It is an arithmetic number, because the mean of its divisors is an integer number (5795876328).

Almost surely, 2^23100111131 is an apocalyptic number.

23100111131 is a deficient number, since it is larger than the sum of its proper divisors (83394181).

23100111131 is an equidigital number, since it uses as much as digits as its factorization.

23100111131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83394180.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 23100111131 its reverse (13111100132), we get a palindrome (36211211263).

The spelling of 23100111131 in words is "twenty-three billion, one hundred million, one hundred eleven thousand, one hundred thirty-one".