231013132143 has 4 divisors (see below), whose sum is σ = 308017509528. Its totient is φ = 154008754760.

The previous prime is 231013132139. The next prime is 231013132153. The reversal of 231013132143 is 341231310132.

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 231013132143 - 2² = 231013132139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231013132123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38502188688 + ... + 38502188693.

It is an arithmetic number, because the mean of its divisors is an integer number (77004377382).

Almost surely, 2^231013132143 is an apocalyptic number.

231013132143 is a deficient number, since it is larger than the sum of its proper divisors (77004377385).

231013132143 is an equidigital number, since it uses as much as digits as its factorization.

231013132143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77004377384.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 231013132143 its reverse (341231310132), we get a palindrome (572244442275).

The spelling of 231013132143 in words is "two hundred thirty-one billion, thirteen million, one hundred thirty-two thousand, one hundred forty-three".