230312491 has 2 divisors, whose sum is σ = 230312492. Its totient is φ = 230312490.

The previous prime is 230312479. The next prime is 230312521. The reversal of 230312491 is 194213032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 230312491 - 2¹⁹ = 229788203 is a prime.

It is not a weakly prime, because it can be changed into another prime (230312431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115156245 + 115156246.

It is an arithmetic number, because the mean of its divisors is an integer number (115156246).

Almost surely, 2^230312491 is an apocalyptic number.

230312491 is a deficient number, since it is larger than the sum of its proper divisors (1).

230312491 is an equidigital number, since it uses as much as digits as its factorization.

230312491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 230312491 is about 15176.0499142563. The cubic root of 230312491 is about 612.9699215354.

The spelling of 230312491 in words is "two hundred thirty million, three hundred twelve thousand, four hundred ninety-one".