231057516 has 12 divisors (see below), whose sum is σ = 539134232. Its totient is φ = 77019168.

The previous prime is 231057503. The next prime is 231057551. The reversal of 231057516 is 615750132.

231057516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9627385 + ... + 9627408.

Almost surely, 2^231057516 is an apocalyptic number.

It is an amenable number.

231057516 is an abundant number, since it is smaller than the sum of its proper divisors (308076716).

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

231057516 is a wasteful number, since it uses less digits than its factorization.

231057516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19254800 (or 19254798 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 231057516 is about 15200.5761732903. The cubic root of 231057516 is about 613.6301641613.

The spelling of 231057516 in words is "two hundred thirty-one million, fifty-seven thousand, five hundred sixteen".