23023157 has 4 divisors (see below), whose sum is σ = 23413440. Its totient is φ = 22632876.

The previous prime is 23023127. The next prime is 23023183. The reversal of 23023157 is 75132032.

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 a cyclic number.

It is not a de Polignac number, because 23023157 - 2⁶ = 23023093 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 (23023127) 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, 195053 + ... + 195170.

It is an arithmetic number, because the mean of its divisors is an integer number (5853360).

Almost surely, 2^23023157 is an apocalyptic number.

It is an amenable number.

23023157 is a deficient number, since it is larger than the sum of its proper divisors (390283).

23023157 is an equidigital number, since it uses as much as digits as its factorization.

23023157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390282.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 23023157 is about 4798.2452000705. The cubic root of 23023157 is about 284.4821086204.

Adding to 23023157 its reverse (75132032), we get a palindrome (98155189).

The spelling of 23023157 in words is "twenty-three million, twenty-three thousand, one hundred fifty-seven".