23231139 has 8 divisors (see below), whose sum is σ = 31137792. Its totient is φ = 15405960.

The previous prime is 23231123. The next prime is 23231141. The reversal of 23231139 is 93113232.

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

It is not a de Polignac number, because 23231139 - 2⁴ = 23231123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23231149) 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 7 ways as a sum of consecutive naturals, for example, 19699 + ... + 20844.

It is an arithmetic number, because the mean of its divisors is an integer number (3892224).

Almost surely, 2^23231139 is an apocalyptic number.

23231139 is a deficient number, since it is larger than the sum of its proper divisors (7906653).

23231139 is a wasteful number, since it uses less digits than its factorization.

23231139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40737.

The product of its digits is 972, while the sum is 24.

The square root of 23231139 is about 4819.8691890963. The cubic root of 23231139 is about 285.3361745588.

The spelling of 23231139 in words is "twenty-three million, two hundred thirty-one thousand, one hundred thirty-nine".