231223297 has 2 divisors, whose sum is σ = 231223298. Its totient is φ = 231223296.

The previous prime is 231223261. The next prime is 231223373. The reversal of 231223297 is 792322132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165791376 + 65431921 = 12876^2 + 8089^2 .

It is a cyclic number.

It is not a de Polignac number, because 231223297 - 2¹⁹ = 230699009 is a prime.

It is not a weakly prime, because it can be changed into another prime (231223207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115611648 + 115611649.

It is an arithmetic number, because the mean of its divisors is an integer number (115611649).

Almost surely, 2^231223297 is an apocalyptic number.

It is an amenable number.

231223297 is a deficient number, since it is larger than the sum of its proper divisors (1).

231223297 is an equidigital number, since it uses as much as digits as its factorization.

231223297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 31.

The square root of 231223297 is about 15206.0283111666. The cubic root of 231223297 is about 613.7768865072.

The spelling of 231223297 in words is "two hundred thirty-one million, two hundred twenty-three thousand, two hundred ninety-seven".