23115233 has 4 divisors (see below), whose sum is σ = 23912340. Its totient is φ = 22318128.

The previous prime is 23115227. The next prime is 23115241. The reversal of 23115233 is 33251132.

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 9778129 + 13337104 = 3127^2 + 3652^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23115233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23115203) 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, 398510 + ... + 398567.

It is an arithmetic number, because the mean of its divisors is an integer number (5978085).

Almost surely, 2^23115233 is an apocalyptic number.

It is an amenable number.

23115233 is a deficient number, since it is larger than the sum of its proper divisors (797107).

23115233 is an equidigital number, since it uses as much as digits as its factorization.

23115233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797106.

The product of its digits is 540, while the sum is 20.

The square root of 23115233 is about 4807.8303838634. The cubic root of 23115233 is about 284.8608451684.

Adding to 23115233 its reverse (33251132), we get a palindrome (56366365).

The spelling of 23115233 in words is "twenty-three million, one hundred fifteen thousand, two hundred thirty-three".