23123232131 has 2 divisors, whose sum is σ = 23123232132. Its totient is φ = 23123232130.

The previous prime is 23123232127. The next prime is 23123232233. The reversal of 23123232131 is 13123232132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23123232131 - 2² = 23123232127 is a prime.

It is a super-2 number, since 2×23123232131² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23123232097 and 23123232106.

It is not a weakly prime, because it can be changed into another prime (23123235131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11561616065 + 11561616066.

It is an arithmetic number, because the mean of its divisors is an integer number (11561616066).

Almost surely, 2^23123232131 is an apocalyptic number.

23123232131 is a deficient number, since it is larger than the sum of its proper divisors (1).

23123232131 is an equidigital number, since it uses as much as digits as its factorization.

23123232131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 23.

Adding to 23123232131 its reverse (13123232132), we get a palindrome (36246464263).

Subtracting from 23123232131 its reverse (13123232132), we obtain a palindrome (9999999999).

The spelling of 23123232131 in words is "twenty-three billion, one hundred twenty-three million, two hundred thirty-two thousand, one hundred thirty-one".