231216276 has 12 divisors (see below), whose sum is σ = 539504672. Its totient is φ = 77072088.

The previous prime is 231216247. The next prime is 231216283. The reversal of 231216276 is 672612132.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9634000 + ... + 9634023.

Almost surely, 2^231216276 is an apocalyptic number.

It is an amenable number.

231216276 is an abundant number, since it is smaller than the sum of its proper divisors (308288396).

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

231216276 is a wasteful number, since it uses less digits than its factorization.

231216276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19268030 (or 19268028 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 231216276 is about 15205.7974470266. The cubic root of 231216276 is about 613.7706740837.

The spelling of 231216276 in words is "two hundred thirty-one million, two hundred sixteen thousand, two hundred seventy-six".