231071216 has 20 divisors (see below), whose sum is σ = 459801672. Its totient is φ = 112412736.

The previous prime is 231071213. The next prime is 231071219. The reversal of 231071216 is 612170132.

231071216 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (231071213) and next prime (231071219).

It is a junction number, because it is equal to n+sod(n) for n = 231071191 and 231071200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231071213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194570 + ... + 195753.

Almost surely, 2^231071216 is an apocalyptic number.

It is an amenable number.

231071216 is a deficient number, since it is larger than the sum of its proper divisors (228730456).

231071216 is a wasteful number, since it uses less digits than its factorization.

231071216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390368 (or 390362 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 231071216 is about 15201.0268074232. The cubic root of 231071216 is about 613.6422918302.

The spelling of 231071216 in words is "two hundred thirty-one million, seventy-one thousand, two hundred sixteen".