23111252 has 24 divisors (see below), whose sum is σ = 41136480. Its totient is φ = 11360160.

The previous prime is 23111237. The next prime is 23111261. The reversal of 23111252 is 25211132.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 23111252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109427 + ... + 109637.

It is an arithmetic number, because the mean of its divisors is an integer number (1714020).

Almost surely, 2^23111252 is an apocalyptic number.

It is an amenable number.

23111252 is a deficient number, since it is larger than the sum of its proper divisors (18025228).

23111252 is a wasteful number, since it uses less digits than its factorization.

23111252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 549 counting only the distinct ones).

The product of its digits is 120, while the sum is 17.

The square root of 23111252 is about 4807.4163539265. The cubic root of 23111252 is about 284.8444909295.

Subtracting from 23111252 its product of digits (120), we obtain a palindrome (23111132).

Adding to 23111252 its reverse (25211132), we get a palindrome (48322384).

The spelling of 23111252 in words is "twenty-three million, one hundred eleven thousand, two hundred fifty-two".