231144343 has 2 divisors, whose sum is σ = 231144344. Its totient is φ = 231144342.

The previous prime is 231144341. The next prime is 231144373. The reversal of 231144343 is 343441132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231144343 - 2¹ = 231144341 is a prime.

Together with 231144341, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231144341) 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, 115572171 + 115572172.

It is an arithmetic number, because the mean of its divisors is an integer number (115572172).

Almost surely, 2^231144343 is an apocalyptic number.

231144343 is a deficient number, since it is larger than the sum of its proper divisors (1).

231144343 is an equidigital number, since it uses as much as digits as its factorization.

231144343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 25.

The square root of 231144343 is about 15203.4319480833. The cubic root of 231144343 is about 613.7070180327.

Adding to 231144343 its reverse (343441132), we get a palindrome (574585475).

The spelling of 231144343 in words is "two hundred thirty-one million, one hundred forty-four thousand, three hundred forty-three".