23307139 has 2 divisors, whose sum is σ = 23307140. Its totient is φ = 23307138.

The previous prime is 23307113. The next prime is 23307169. The reversal of 23307139 is 93170332.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23307139 - 2⁹ = 23306627 is a prime.

It is not a weakly prime, because it can be changed into another prime (23307169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11653569 + 11653570.

It is an arithmetic number, because the mean of its divisors is an integer number (11653570).

Almost surely, 2^23307139 is an apocalyptic number.

23307139 is a deficient number, since it is larger than the sum of its proper divisors (1).

23307139 is an equidigital number, since it uses as much as digits as its factorization.

23307139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 23307139 is about 4827.7467829206. The cubic root of 23307139 is about 285.6469922113.

The spelling of 23307139 in words is "twenty-three million, three hundred seven thousand, one hundred thirty-nine".