23145122431 has 2 divisors, whose sum is σ = 23145122432. Its totient is φ = 23145122430.

The previous prime is 23145122347. The next prime is 23145122437. The reversal of 23145122431 is 13422154132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23145122431 is a prime.

It is a super-2 number, since 2×23145122431² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23145122431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23145122437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11572561215 + 11572561216.

It is an arithmetic number, because the mean of its divisors is an integer number (11572561216).

Almost surely, 2^23145122431 is an apocalyptic number.

23145122431 is a deficient number, since it is larger than the sum of its proper divisors (1).

23145122431 is an equidigital number, since it uses as much as digits as its factorization.

23145122431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 28.

Adding to 23145122431 its reverse (13422154132), we get a palindrome (36567276563).

The spelling of 23145122431 in words is "twenty-three billion, one hundred forty-five million, one hundred twenty-two thousand, four hundred thirty-one".