23148139 has 6 divisors (see below), whose sum is σ = 26927484. Its totient is φ = 19841220.

The previous prime is 23148131. The next prime is 23148161. The reversal of 23148139 is 93184132.

It is not a de Polignac number, because 23148139 - 2³ = 23148131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23148139.

It is not an unprimeable number, because it can be changed into a prime (23148131) 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 5 ways as a sum of consecutive naturals, for example, 236157 + ... + 236254.

It is an arithmetic number, because the mean of its divisors is an integer number (4487914).

Almost surely, 2^23148139 is an apocalyptic number.

23148139 is a deficient number, since it is larger than the sum of its proper divisors (3779345).

23148139 is an equidigital number, since it uses as much as digits as its factorization.

23148139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472425 (or 472418 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 23148139 is about 4811.2512925433. The cubic root of 23148139 is about 284.9959535693.

The spelling of 23148139 in words is "twenty-three million, one hundred forty-eight thousand, one hundred thirty-nine".