23133090817 has 4 divisors (see below), whose sum is σ = 23512321876. Its totient is φ = 22753859760.

The previous prime is 23133090809. The next prime is 23133090839. The reversal of 23133090817 is 71809033132.

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 7050792961 + 16082297856 = 83969^2 + 126816^2 .

It is a cyclic number.

It is not a de Polignac number, because 23133090817 - 2³ = 23133090809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23133090917) 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, 189615438 + ... + 189615559.

It is an arithmetic number, because the mean of its divisors is an integer number (5878080469).

Almost surely, 2^23133090817 is an apocalyptic number.

It is an amenable number.

23133090817 is a deficient number, since it is larger than the sum of its proper divisors (379231059).

23133090817 is an equidigital number, since it uses as much as digits as its factorization.

23133090817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379231058.

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 23133090817 in words is "twenty-three billion, one hundred thirty-three million, ninety thousand, eight hundred seventeen".