231093216 has 48 divisors (see below), whose sum is σ = 674024400. Its totient is φ = 77030784.

The previous prime is 231093211. The next prime is 231093229. The reversal of 231093216 is 612390132.

231093216 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 (48).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 231093216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231093211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132871 + ... + 134598.

It is an arithmetic number, because the mean of its divisors is an integer number (14042175).

Almost surely, 2^231093216 is an apocalyptic number.

It is an amenable number.

231093216 is an abundant number, since it is smaller than the sum of its proper divisors (442931184).

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

231093216 is a wasteful number, since it uses less digits than its factorization.

231093216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267488 (or 267474 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 231093216 is about 15201.7504255267. The cubic root of 231093216 is about 613.6617659159.

The spelling of 231093216 in words is "two hundred thirty-one million, ninety-three thousand, two hundred sixteen".