23161235 has 4 divisors (see below), whose sum is σ = 27793488. Its totient is φ = 18528984.

The previous prime is 23161199. The next prime is 23161241. The reversal of 23161235 is 53216132.

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

It is a cyclic number.

It is not a de Polignac number, because 23161235 - 2²² = 18966931 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23161235.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2316119 + ... + 2316128.

It is an arithmetic number, because the mean of its divisors is an integer number (6948372).

Almost surely, 2^23161235 is an apocalyptic number.

23161235 is a deficient number, since it is larger than the sum of its proper divisors (4632253).

23161235 is an equidigital number, since it uses as much as digits as its factorization.

23161235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4632252.

The product of its digits is 1080, while the sum is 23.

The square root of 23161235 is about 4812.6120766170. The cubic root of 23161235 is about 285.0496886792.

Adding to 23161235 its reverse (53216132), we get a palindrome (76377367).

The spelling of 23161235 in words is "twenty-three million, one hundred sixty-one thousand, two hundred thirty-five".