23231121 has 8 divisors (see below), whose sum is σ = 31974144. Its totient is φ = 14987760.

The previous prime is 23231107. The next prime is 23231123. The reversal of 23231121 is 12113232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23231121 - 2¹⁸ = 22968977 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23231121.

It is not an unprimeable number, because it can be changed into a prime (23231123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124806 + ... + 124991.

It is an arithmetic number, because the mean of its divisors is an integer number (3996768).

Almost surely, 2^23231121 is an apocalyptic number.

It is an amenable number.

23231121 is a deficient number, since it is larger than the sum of its proper divisors (8743023).

23231121 is a wasteful number, since it uses less digits than its factorization.

23231121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249831.

The product of its digits is 72, while the sum is 15.

The square root of 23231121 is about 4819.8673218254. The cubic root of 23231121 is about 285.3361008638.

Adding to 23231121 its reverse (12113232), we get a palindrome (35344353).

The spelling of 23231121 in words is "twenty-three million, two hundred thirty-one thousand, one hundred twenty-one".