23013539 has 2 divisors, whose sum is σ = 23013540. Its totient is φ = 23013538.

The previous prime is 23013533. The next prime is 23013553. The reversal of 23013539 is 93531032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23013539 - 2⁸ = 23013283 is a prime.

It is not a weakly prime, because it can be changed into another prime (23013533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11506769 + 11506770.

It is an arithmetic number, because the mean of its divisors is an integer number (11506770).

Almost surely, 2^23013539 is an apocalyptic number.

23013539 is a deficient number, since it is larger than the sum of its proper divisors (1).

23013539 is an equidigital number, since it uses as much as digits as its factorization.

23013539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 23013539 is about 4797.2428539735. The cubic root of 23013539 is about 284.4424886555.

The spelling of 23013539 in words is "twenty-three million, thirteen thousand, five hundred thirty-nine".