231645316 has 12 divisors (see below), whose sum is σ = 463290688. Its totient is φ = 99276552.

The previous prime is 231645313. The next prime is 231645317. The reversal of 231645316 is 613546132.

231645316 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (231645313) 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, 4136496 + ... + 4136551.

Almost surely, 2^231645316 is an apocalyptic number.

It is an amenable number.

231645316 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

231645316 is a wasteful number, since it uses less digits than its factorization.

231645316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8273058 (or 8273056 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 231645316 is about 15219.8986856023. The cubic root of 231645316 is about 614.1500727783.

The spelling of 231645316 in words is "two hundred thirty-one million, six hundred forty-five thousand, three hundred sixteen".