230644531 has 4 divisors (see below), whose sum is σ = 248386432. Its totient is φ = 212902632.

The previous prime is 230644489. The next prime is 230644549. The reversal of 230644531 is 135446032.

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

It is a cyclic number.

It is not a de Polignac number, because 230644531 - 2²⁵ = 197090099 is a prime.

It is a super-2 number, since 2×230644531² = 106393799360419922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 230644531.

It is not an unprimeable number, because it can be changed into a prime (230644571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8870931 + ... + 8870956.

It is an arithmetic number, because the mean of its divisors is an integer number (62096608).

Almost surely, 2^230644531 is an apocalyptic number.

230644531 is a deficient number, since it is larger than the sum of its proper divisors (17741901).

230644531 is a wasteful number, since it uses less digits than its factorization.

230644531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17741900.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 230644531 is about 15186.9855797653. The cubic root of 230644531 is about 613.2643516530.

The spelling of 230644531 in words is "two hundred thirty million, six hundred forty-four thousand, five hundred thirty-one".