230643516 has 12 divisors (see below), whose sum is σ = 538168232. Its totient is φ = 76881168.

The previous prime is 230643433. The next prime is 230643541. The reversal of 230643516 is 615346032.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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, 9610135 + ... + 9610158.

Almost surely, 2^230643516 is an apocalyptic number.

It is an amenable number.

230643516 is an abundant number, since it is smaller than the sum of its proper divisors (307524716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230643516 is a wasteful number, since it uses less digits than its factorization.

230643516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19220300 (or 19220298 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 230643516 is about 15186.9521629588. The cubic root of 230643516 is about 613.2634520519.

Adding to 230643516 its reverse (615346032), we get a palindrome (845989548).

The spelling of 230643516 in words is "two hundred thirty million, six hundred forty-three thousand, five hundred sixteen".