23147123 has 4 divisors (see below), whose sum is σ = 23426088. Its totient is φ = 22868160.

The previous prime is 23147107. The next prime is 23147129. The reversal of 23147123 is 32174132.

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

It is not a de Polignac number, because 23147123 - 2⁴ = 23147107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23147129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139358 + ... + 139523.

It is an arithmetic number, because the mean of its divisors is an integer number (5856522).

Almost surely, 2^23147123 is an apocalyptic number.

23147123 is a deficient number, since it is larger than the sum of its proper divisors (278965).

23147123 is an equidigital number, since it uses as much as digits as its factorization.

23147123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278964.

The product of its digits is 1008, while the sum is 23.

The square root of 23147123 is about 4811.1457055467. The cubic root of 23147123 is about 284.9917839019.

The spelling of 23147123 in words is "twenty-three million, one hundred forty-seven thousand, one hundred twenty-three".