231310143 has 24 divisors (see below), whose sum is σ = 354790800. Its totient is φ = 144716544.

The previous prime is 231310117. The next prime is 231310159. The reversal of 231310143 is 341013132.

It is not a de Polignac number, because 231310143 - 2²⁰ = 230261567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231310193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55993 + ... + 59981.

It is an arithmetic number, because the mean of its divisors is an integer number (14782950).

Almost surely, 2^231310143 is an apocalyptic number.

231310143 is a deficient number, since it is larger than the sum of its proper divisors (123480657).

231310143 is a wasteful number, since it uses less digits than its factorization.

231310143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391 (or 4388 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 231310143 is about 15208.8836868457. The cubic root of 231310143 is about 613.8537204538.

Adding to 231310143 its reverse (341013132), we get a palindrome (572323275).

The spelling of 231310143 in words is "two hundred thirty-one million, three hundred ten thousand, one hundred forty-three".