23133289 has 4 divisors (see below), whose sum is σ = 23191380. Its totient is φ = 23075200.

The previous prime is 23133287. The next prime is 23133301. The reversal of 23133289 is 98233132.

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 14953689 + 8179600 = 3867^2 + 2860^2 .

It is a cyclic number.

It is not a de Polignac number, because 23133289 - 2¹ = 23133287 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 23133289.

It is not an unprimeable number, because it can be changed into a prime (23133283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28444 + ... + 29245.

It is an arithmetic number, because the mean of its divisors is an integer number (5797845).

Almost surely, 2^23133289 is an apocalyptic number.

It is an amenable number.

23133289 is a deficient number, since it is larger than the sum of its proper divisors (58091).

23133289 is an equidigital number, since it uses as much as digits as its factorization.

23133289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58090.

The product of its digits is 7776, while the sum is 31.

The square root of 23133289 is about 4809.7077873817. The cubic root of 23133289 is about 284.9349969737.

The spelling of 23133289 in words is "twenty-three million, one hundred thirty-three thousand, two hundred eighty-nine".