23111142 has 8 divisors (see below), whose sum is σ = 46222296. Its totient is φ = 7703712.

The previous prime is 23111119. The next prime is 23111149. The reversal of 23111142 is 24111132.

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

23111142 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23111149) 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, 1925923 + ... + 1925934.

It is an arithmetic number, because the mean of its divisors is an integer number (5777787).

Almost surely, 2^23111142 is an apocalyptic number.

23111142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23111142 is a wasteful number, since it uses less digits than its factorization.

23111142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3851862.

The product of its digits is 48, while the sum is 15.

The square root of 23111142 is about 4807.4049132562. The cubic root of 23111142 is about 284.8440390148.

Adding to 23111142 its reverse (24111132), we get a palindrome (47222274).

The spelling of 23111142 in words is "twenty-three million, one hundred eleven thousand, one hundred forty-two".