230564531 has 4 divisors (see below), whose sum is σ = 230695200. Its totient is φ = 230433864.

The previous prime is 230564513. The next prime is 230564569. The reversal of 230564531 is 135465032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230564531 is a prime.

It is a super-2 number, since 2×230564531² = 106320005910499922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230564494 and 230564503.

It is not an unprimeable number, because it can be changed into a prime (230564731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62651 + ... + 66228.

It is an arithmetic number, because the mean of its divisors is an integer number (57673800).

Almost surely, 2^230564531 is an apocalyptic number.

230564531 is a deficient number, since it is larger than the sum of its proper divisors (130669).

230564531 is a wasteful number, since it uses less digits than its factorization.

230564531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130668.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 230564531 is about 15184.3515172693. The cubic root of 230564531 is about 613.1934390364.

The spelling of 230564531 in words is "two hundred thirty million, five hundred sixty-four thousand, five hundred thirty-one".