23099431 has 2 divisors, whose sum is σ = 23099432. Its totient is φ = 23099430.

The previous prime is 23099423. The next prime is 23099449. The reversal of 23099431 is 13499032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23099431 - 2³ = 23099423 is a prime.

It is a super-2 number, since 2×23099431² = 1067167425047522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23099393 and 23099402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23039431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11549715 + 11549716.

It is an arithmetic number, because the mean of its divisors is an integer number (11549716).

Almost surely, 2^23099431 is an apocalyptic number.

23099431 is a deficient number, since it is larger than the sum of its proper divisors (1).

23099431 is an equidigital number, since it uses as much as digits as its factorization.

23099431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 23099431 is about 4806.1867421065. The cubic root of 23099431 is about 284.7959183270.

The spelling of 23099431 in words is "twenty-three million, ninety-nine thousand, four hundred thirty-one".