230645257 has 4 divisors (see below), whose sum is σ = 230676496. Its totient is φ = 230614020.

The previous prime is 230645251. The next prime is 230645287. The reversal of 230645257 is 752546032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230645257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230645251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2338 + ... + 21604.

It is an arithmetic number, because the mean of its divisors is an integer number (57669124).

Almost surely, 2^230645257 is an apocalyptic number.

It is an amenable number.

230645257 is a deficient number, since it is larger than the sum of its proper divisors (31239).

230645257 is a wasteful number, since it uses less digits than its factorization.

230645257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31238.

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 230645257 is about 15187.0094817907. The cubic root of 230645257 is about 613.2649951099.

The spelling of 230645257 in words is "two hundred thirty million, six hundred forty-five thousand, two hundred fifty-seven".