23121132031 has 2 divisors, whose sum is σ = 23121132032. Its totient is φ = 23121132030.

The previous prime is 23121132017. The next prime is 23121132043. The reversal of 23121132031 is 13023112132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23121132031 - 2¹⁹ = 23120607743 is a prime.

It is a super-2 number, since 2×23121132031² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23121132061) 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, 11560566015 + 11560566016.

It is an arithmetic number, because the mean of its divisors is an integer number (11560566016).

Almost surely, 2^23121132031 is an apocalyptic number.

23121132031 is a deficient number, since it is larger than the sum of its proper divisors (1).

23121132031 is an equidigital number, since it uses as much as digits as its factorization.

23121132031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 23121132031 its reverse (13023112132), we get a palindrome (36144244163).

The spelling of 23121132031 in words is "twenty-three billion, one hundred twenty-one million, one hundred thirty-two thousand, thirty-one".