23431153 has 4 divisors (see below), whose sum is σ = 23516020. Its totient is φ = 23346288.

The previous prime is 23431147. The next prime is 23431157. The reversal of 23431153 is 35113432.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12027024 + 11404129 = 3468^2 + 3377^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23431153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23431157) 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, 42018 + ... + 42571.

It is an arithmetic number, because the mean of its divisors is an integer number (5879005).

Almost surely, 2^23431153 is an apocalyptic number.

It is an amenable number.

23431153 is a deficient number, since it is larger than the sum of its proper divisors (84867).

23431153 is an equidigital number, since it uses as much as digits as its factorization.

23431153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84866.

The product of its digits is 1080, while the sum is 22.

The square root of 23431153 is about 4840.5736230327. The cubic root of 23431153 is about 286.1527254126.

Adding to 23431153 its reverse (35113432), we get a palindrome (58544585).

The spelling of 23431153 in words is "twenty-three million, four hundred thirty-one thousand, one hundred fifty-three".