23151121 has 8 divisors (see below), whose sum is σ = 26507264. Its totient is φ = 19807200.

The previous prime is 23151109. The next prime is 23151181. The reversal of 23151121 is 12115132.

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

It is not a de Polignac number, because 23151121 - 2⁷ = 23150993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23151095 and 23151104.

It is not an unprimeable number, because it can be changed into a prime (23151181) 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, 1456 + ... + 6958.

It is an arithmetic number, because the mean of its divisors is an integer number (3313408).

Almost surely, 2^23151121 is an apocalyptic number.

It is an amenable number.

23151121 is a deficient number, since it is larger than the sum of its proper divisors (3356143).

23151121 is an equidigital number, since it uses as much as digits as its factorization.

23151121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6111.

The product of its digits is 60, while the sum is 16.

The square root of 23151121 is about 4811.5611811552. The cubic root of 23151121 is about 285.0081910029.

Adding to 23151121 its reverse (12115132), we get a palindrome (35266253).

The spelling of 23151121 in words is "twenty-three million, one hundred fifty-one thousand, one hundred twenty-one".