23311112131 has 4 divisors (see below), whose sum is σ = 23537433712. Its totient is φ = 23084790552.

The previous prime is 23311112089. The next prime is 23311112161. The reversal of 23311112131 is 13121111332.

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 23311112131 - 2⁹ = 23311111619 is a prime.

It is a super-2 number, since 2×23311112131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23311112099 and 23311112108.

It is not an unprimeable number, because it can be changed into a prime (23311112161) 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, 113160636 + ... + 113160841.

It is an arithmetic number, because the mean of its divisors is an integer number (5884358428).

Almost surely, 2^23311112131 is an apocalyptic number.

23311112131 is a deficient number, since it is larger than the sum of its proper divisors (226321581).

23311112131 is a wasteful number, since it uses less digits than its factorization.

23311112131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226321580.

The product of its digits is 108, while the sum is 19.

Adding to 23311112131 its reverse (13121111332), we get a palindrome (36432223463).

The spelling of 23311112131 in words is "twenty-three billion, three hundred eleven million, one hundred twelve thousand, one hundred thirty-one".