23210139 has 8 divisors (see below), whose sum is σ = 31191040. Its totient is φ = 15351336.

The previous prime is 23210111. The next prime is 23210149. The reversal of 23210139 is 93101232.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23210139 - 2⁸ = 23209883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23210149) 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 in 7 ways as a sum of consecutive naturals, for example, 30079 + ... + 30840.

It is an arithmetic number, because the mean of its divisors is an integer number (3898880).

Almost surely, 2^23210139 is an apocalyptic number.

23210139 is a deficient number, since it is larger than the sum of its proper divisors (7980901).

23210139 is a wasteful number, since it uses less digits than its factorization.

23210139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61049.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 23210139 is about 4817.6902142002. The cubic root of 23210139 is about 285.2501712265.

The spelling of 23210139 in words is "twenty-three million, two hundred ten thousand, one hundred thirty-nine".