23231321143 has 16 divisors (see below), whose sum is σ = 24541056000. Its totient is φ = 21948240160.

The previous prime is 23231321137. The next prime is 23231321207. The reversal of 23231321143 is 34112313232.

It is a cyclic number.

It is not a de Polignac number, because 23231321143 - 2⁹ = 23231320631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23231321123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 594498 + ... + 632368.

It is an arithmetic number, because the mean of its divisors is an integer number (1533816000).

Almost surely, 2^23231321143 is an apocalyptic number.

23231321143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

23231321143 is a deficient number, since it is larger than the sum of its proper divisors (1309734857).

23231321143 is a wasteful number, since it uses less digits than its factorization.

23231321143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38222.

The product of its digits is 2592, while the sum is 25.

Adding to 23231321143 its reverse (34112313232), we get a palindrome (57343634375).

The spelling of 23231321143 in words is "twenty-three billion, two hundred thirty-one million, three hundred twenty-one thousand, one hundred forty-three".