23131122331 has 2 divisors, whose sum is σ = 23131122332. Its totient is φ = 23131122330.

The previous prime is 23131122323. The next prime is 23131122337. The reversal of 23131122331 is 13322113132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23131122331 - 2³ = 23131122323 is a prime.

It is a super-2 number, since 2×23131122331² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23131122337) 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 as a sum of consecutive naturals, namely, 11565561165 + 11565561166.

It is an arithmetic number, because the mean of its divisors is an integer number (11565561166).

Almost surely, 2^23131122331 is an apocalyptic number.

23131122331 is a deficient number, since it is larger than the sum of its proper divisors (1).

23131122331 is an equidigital number, since it uses as much as digits as its factorization.

23131122331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 22.

Adding to 23131122331 its reverse (13322113132), we get a palindrome (36453235463).

The spelling of 23131122331 in words is "twenty-three billion, one hundred thirty-one million, one hundred twenty-two thousand, three hundred thirty-one".