23148813 has 4 divisors (see below), whose sum is σ = 30865088. Its totient is φ = 15432540.

The previous prime is 23148809. The next prime is 23148857. The reversal of 23148813 is 31884132.

23148813 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23148813 - 2² = 23148809 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23148803) 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 3 ways as a sum of consecutive naturals, for example, 3858133 + ... + 3858138.

It is an arithmetic number, because the mean of its divisors is an integer number (7716272).

Almost surely, 2^23148813 is an apocalyptic number.

It is an amenable number.

23148813 is a deficient number, since it is larger than the sum of its proper divisors (7716275).

23148813 is an equidigital number, since it uses as much as digits as its factorization.

23148813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7716274.

The product of its digits is 4608, while the sum is 30.

The square root of 23148813 is about 4811.3213361820. The cubic root of 23148813 is about 284.9987196003.

The spelling of 23148813 in words is "twenty-three million, one hundred forty-eight thousand, eight hundred thirteen".