23212312031 has 2 divisors, whose sum is σ = 23212312032. Its totient is φ = 23212312030.

The previous prime is 23212312009. The next prime is 23212312033. The reversal of 23212312031 is 13021321232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23212312031 - 2²² = 23208117727 is a prime.

It is a super-2 number, since 2×23212312031² (a number of 22 digits) contains 22 as substring.

Together with 23212312033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 23212311994 and 23212312012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23212312033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11606156015 + 11606156016.

It is an arithmetic number, because the mean of its divisors is an integer number (11606156016).

Almost surely, 2^23212312031 is an apocalyptic number.

23212312031 is a deficient number, since it is larger than the sum of its proper divisors (1).

23212312031 is an equidigital number, since it uses as much as digits as its factorization.

23212312031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23212312031 its reverse (13021321232), we get a palindrome (36233633263).

The spelling of 23212312031 in words is "twenty-three billion, two hundred twelve million, three hundred twelve thousand, thirty-one".