231441645143 has 2 divisors, whose sum is σ = 231441645144. Its totient is φ = 231441645142.

The previous prime is 231441645139. The next prime is 231441645179. The reversal of 231441645143 is 341546144132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231441645143 - 2² = 231441645139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231441645097 and 231441645106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231441644143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115720822571 + 115720822572.

It is an arithmetic number, because the mean of its divisors is an integer number (115720822572).

Almost surely, 2^231441645143 is an apocalyptic number.

231441645143 is a deficient number, since it is larger than the sum of its proper divisors (1).

231441645143 is an equidigital number, since it uses as much as digits as its factorization.

231441645143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 38.

Adding to 231441645143 its reverse (341546144132), we get a palindrome (572987789275).

The spelling of 231441645143 in words is "two hundred thirty-one billion, four hundred forty-one million, six hundred forty-five thousand, one hundred forty-three".