23123320131 has 16 divisors (see below), whose sum is σ = 32466093440. Its totient is φ = 14598662400.

The previous prime is 23123320109. The next prime is 23123320141. The reversal of 23123320131 is 13102332132.

It is not a de Polignac number, because 23123320131 - 2⁶ = 23123320067 is a prime.

It is a super-2 number, since 2×23123320131² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23123320098 and 23123320107.

It is not an unprimeable number, because it can be changed into a prime (23123320141) 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, 77331 + ... + 228531.

It is an arithmetic number, because the mean of its divisors is an integer number (2029130840).

Almost surely, 2^23123320131 is an apocalyptic number.

23123320131 is a deficient number, since it is larger than the sum of its proper divisors (9342773309).

23123320131 is a wasteful number, since it uses less digits than its factorization.

23123320131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153906.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 23123320131 its reverse (13102332132), we get a palindrome (36225652263).

The spelling of 23123320131 in words is "twenty-three billion, one hundred twenty-three million, three hundred twenty thousand, one hundred thirty-one".