231143023 has 2 divisors, whose sum is σ = 231143024. Its totient is φ = 231143022.

The previous prime is 231142993. The next prime is 231143053. The reversal of 231143023 is 320341132.

It is a balanced prime because it is at equal distance from previous prime (231142993) and next prime (231143053).

It is a cyclic number.

It is not a de Polignac number, because 231143023 - 2⁵ = 231142991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231143053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115571511 + 115571512.

It is an arithmetic number, because the mean of its divisors is an integer number (115571512).

Almost surely, 2^231143023 is an apocalyptic number.

231143023 is a deficient number, since it is larger than the sum of its proper divisors (1).

231143023 is an equidigital number, since it uses as much as digits as its factorization.

231143023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 231143023 is about 15203.3885367703. The cubic root of 231143023 is about 613.7058497947.

Adding to 231143023 its reverse (320341132), we get a palindrome (551484155).

The spelling of 231143023 in words is "two hundred thirty-one million, one hundred forty-three thousand, twenty-three".