231044291 has 2 divisors, whose sum is σ = 231044292. Its totient is φ = 231044290.

The previous prime is 231044287. The next prime is 231044293. The reversal of 231044291 is 192440132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231044291 - 2² = 231044287 is a prime.

Together with 231044293, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231044291.

It is not a weakly prime, because it can be changed into another prime (231044293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115522145 + 115522146.

It is an arithmetic number, because the mean of its divisors is an integer number (115522146).

Almost surely, 2^231044291 is an apocalyptic number.

231044291 is a deficient number, since it is larger than the sum of its proper divisors (1).

231044291 is an equidigital number, since it uses as much as digits as its factorization.

231044291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 231044291 is about 15200.1411506604. The cubic root of 231044291 is about 613.6184565226.

The spelling of 231044291 in words is "two hundred thirty-one million, forty-four thousand, two hundred ninety-one".