23289121 has 4 divisors (see below), whose sum is σ = 23584000. Its totient is φ = 22994244.

The previous prime is 23289073. The next prime is 23289127. The reversal of 23289121 is 12198232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23289121 - 2²¹ = 21191969 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 23289121.

It is not an unprimeable number, because it can be changed into a prime (23289127) 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, 147321 + ... + 147478.

It is an arithmetic number, because the mean of its divisors is an integer number (5896000).

Almost surely, 2^23289121 is an apocalyptic number.

It is an amenable number.

23289121 is a deficient number, since it is larger than the sum of its proper divisors (294879).

23289121 is an equidigital number, since it uses as much as digits as its factorization.

23289121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294878.

The product of its digits is 1728, while the sum is 28.

The square root of 23289121 is about 4825.8803341981. The cubic root of 23289121 is about 285.5733650657.

It can be divided in two parts, 2328 and 9121, that added together give a square (11449 = 107²).

The spelling of 23289121 in words is "twenty-three million, two hundred eighty-nine thousand, one hundred twenty-one".