23321332031 has 2 divisors, whose sum is σ = 23321332032. Its totient is φ = 23321332030.

The previous prime is 23321332019. The next prime is 23321332063. The reversal of 23321332031 is 13023312332.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23321332031 is a prime.

It is a super-2 number, since 2×23321332031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23321331988 and 23321332006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23321332231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11660666015 + 11660666016.

It is an arithmetic number, because the mean of its divisors is an integer number (11660666016).

Almost surely, 2^23321332031 is an apocalyptic number.

23321332031 is a deficient number, since it is larger than the sum of its proper divisors (1).

23321332031 is an equidigital number, since it uses as much as digits as its factorization.

23321332031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 23321332031 its reverse (13023312332), we get a palindrome (36344644363).

The spelling of 23321332031 in words is "twenty-three billion, three hundred twenty-one million, three hundred thirty-two thousand, thirty-one".