230431511 has 2 divisors, whose sum is σ = 230431512. Its totient is φ = 230431510.

The previous prime is 230431499. The next prime is 230431517. The reversal of 230431511 is 115134032.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 230431511 - 2²⁶ = 163322647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230431517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115215755 + 115215756.

It is an arithmetic number, because the mean of its divisors is an integer number (115215756).

Almost surely, 2^230431511 is an apocalyptic number.

230431511 is a deficient number, since it is larger than the sum of its proper divisors (1).

230431511 is an equidigital number, since it uses as much as digits as its factorization.

230431511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 230431511 is about 15179.9707180218. The cubic root of 230431511 is about 613.0754927618.

Adding to 230431511 its reverse (115134032), we get a palindrome (345565543).

The spelling of 230431511 in words is "two hundred thirty million, four hundred thirty-one thousand, five hundred eleven".