23120431 has 2 divisors, whose sum is σ = 23120432. Its totient is φ = 23120430.

The previous prime is 23120429. The next prime is 23120443. The reversal of 23120431 is 13402132.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23120431 - 2¹ = 23120429 is a prime.

It is a super-2 number, since 2×23120431² = 1069108659251522, which contains 22 as substring.

Together with 23120429, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23120401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11560215 + 11560216.

It is an arithmetic number, because the mean of its divisors is an integer number (11560216).

Almost surely, 2^23120431 is an apocalyptic number.

23120431 is a deficient number, since it is larger than the sum of its proper divisors (1).

23120431 is an equidigital number, since it uses as much as digits as its factorization.

23120431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 23120431 is about 4808.3709299512. The cubic root of 23120431 is about 284.8821961061.

Adding to 23120431 its reverse (13402132), we get a palindrome (36522563).

The spelling of 23120431 in words is "twenty-three million, one hundred twenty thousand, four hundred thirty-one".