23116139 has 4 divisors (see below), whose sum is σ = 23461224. Its totient is φ = 22771056.

The previous prime is 23116123. The next prime is 23116193. The reversal of 23116139 is 93161132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23116139 - 2⁴ = 23116123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23116199) 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 in 3 ways as a sum of consecutive naturals, for example, 172442 + ... + 172575.

It is an arithmetic number, because the mean of its divisors is an integer number (5865306).

Almost surely, 2^23116139 is an apocalyptic number.

23116139 is a deficient number, since it is larger than the sum of its proper divisors (345085).

23116139 is an equidigital number, since it uses as much as digits as its factorization.

23116139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345084.

The product of its digits is 972, while the sum is 26.

The square root of 23116139 is about 4807.9246042341. The cubic root of 23116139 is about 284.8645668204.

The spelling of 23116139 in words is "twenty-three million, one hundred sixteen thousand, one hundred thirty-nine".