23155321143 has 16 divisors (see below), whose sum is σ = 31044794112. Its totient is φ = 15351600000.

The previous prime is 23155321117. The next prime is 23155321177. The reversal of 23155321143 is 34112355132.

It is not a de Polignac number, because 23155321143 - 2¹⁰ = 23155320119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23155321143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23155322143) 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, 369118 + ... + 427268.

It is an arithmetic number, because the mean of its divisors is an integer number (1940299632).

Almost surely, 2^23155321143 is an apocalyptic number.

23155321143 is a deficient number, since it is larger than the sum of its proper divisors (7889472969).

23155321143 is a wasteful number, since it uses less digits than its factorization.

23155321143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58886.

The product of its digits is 10800, while the sum is 30.

Adding to 23155321143 its reverse (34112355132), we get a palindrome (57267676275).

The spelling of 23155321143 in words is "twenty-three billion, one hundred fifty-five million, three hundred twenty-one thousand, one hundred forty-three".