23143121 has 8 divisors (see below), whose sum is σ = 24420000. Its totient is φ = 21872160.

The previous prime is 23143111. The next prime is 23143151. The reversal of 23143121 is 12134132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23143121 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 23143121.

It is not an unprimeable number, because it can be changed into a prime (23143111) 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, 8261 + ... + 10701.

It is an arithmetic number, because the mean of its divisors is an integer number (3052500).

Almost surely, 2^23143121 is an apocalyptic number.

It is an amenable number.

23143121 is a deficient number, since it is larger than the sum of its proper divisors (1276879).

23143121 is a wasteful number, since it uses less digits than its factorization.

23143121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2959.

The product of its digits is 144, while the sum is 17.

The square root of 23143121 is about 4810.7297783185. The cubic root of 23143121 is about 284.9753584933.

Adding to 23143121 its reverse (12134132), we get a palindrome (35277253).

The spelling of 23143121 in words is "twenty-three million, one hundred forty-three thousand, one hundred twenty-one".