23331121 has 4 divisors (see below), whose sum is σ = 25452144. Its totient is φ = 21210100.

The previous prime is 23331103. The next prime is 23331151. The reversal of 23331121 is 12113332.

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 23331121 - 2²³ = 14942513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23331095 and 23331104.

It is not an unprimeable number, because it can be changed into a prime (23331151) 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, 1060495 + ... + 1060516.

It is an arithmetic number, because the mean of its divisors is an integer number (6363036).

Almost surely, 2^23331121 is an apocalyptic number.

It is an amenable number.

23331121 is a deficient number, since it is larger than the sum of its proper divisors (2121023).

23331121 is a wasteful number, since it uses less digits than its factorization.

23331121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121022.

The product of its digits is 108, while the sum is 16.

The square root of 23331121 is about 4830.2299117123. The cubic root of 23331121 is about 285.7449312724.

Adding to 23331121 its reverse (12113332), we get a palindrome (35444453).

It can be divided in two parts, 233311 and 21, that added together give a palindrome (233332).

The spelling of 23331121 in words is "twenty-three million, three hundred thirty-one thousand, one hundred twenty-one".