23231143 has 4 divisors (see below), whose sum is σ = 25018168. Its totient is φ = 21444120.

The previous prime is 23231141. The next prime is 23231149. The reversal of 23231143 is 34113232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23231143 - 2¹ = 23231141 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 23231143.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 893493 + ... + 893518.

It is an arithmetic number, because the mean of its divisors is an integer number (6254542).

Almost surely, 2^23231143 is an apocalyptic number.

23231143 is a deficient number, since it is larger than the sum of its proper divisors (1787025).

23231143 is a wasteful number, since it uses less digits than its factorization.

23231143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787024.

The product of its digits is 432, while the sum is 19.

The square root of 23231143 is about 4819.8696040453. The cubic root of 23231143 is about 285.3361909354.

Adding to 23231143 its reverse (34113232), we get a palindrome (57344375).

It can be divided in two parts, 232 and 31143, that added together give a triangular number (31375 = T₂₅₀).

The spelling of 23231143 in words is "twenty-three million, two hundred thirty-one thousand, one hundred forty-three".