23231142 has 24 divisors (see below), whose sum is σ = 54910440. Its totient is φ = 7039680.

The previous prime is 23231141. The next prime is 23231149. The reversal of 23231142 is 24113232.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23231141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58467 + ... + 58862.

It is an arithmetic number, because the mean of its divisors is an integer number (2287935).

Almost surely, 2^23231142 is an apocalyptic number.

23231142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

23231142 is an abundant number, since it is smaller than the sum of its proper divisors (31679298).

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

23231142 is a wasteful number, since it uses less digits than its factorization.

23231142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117348 (or 117345 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 23231142 is about 4819.8695003081. The cubic root of 23231142 is about 285.3361868413.

Adding to 23231142 its reverse (24113232), we get a palindrome (47344374).

The spelling of 23231142 in words is "twenty-three million, two hundred thirty-one thousand, one hundred forty-two".