23890320431 has 2 divisors, whose sum is σ = 23890320432. Its totient is φ = 23890320430.

The previous prime is 23890320403. The next prime is 23890320457. The reversal of 23890320431 is 13402309832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23890320431 - 2³⁴ = 6710451247 is a prime.

It is a super-2 number, since 2×23890320431² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 23890320391 and 23890320400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23890328431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11945160215 + 11945160216.

It is an arithmetic number, because the mean of its divisors is an integer number (11945160216).

Almost surely, 2^23890320431 is an apocalyptic number.

23890320431 is a deficient number, since it is larger than the sum of its proper divisors (1).

23890320431 is an equidigital number, since it uses as much as digits as its factorization.

23890320431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 23890320431 in words is "twenty-three billion, eight hundred ninety million, three hundred twenty thousand, four hundred thirty-one".