231216193 has 16 divisors (see below), whose sum is σ = 253725696. Its totient is φ = 209422080.

The previous prime is 231216191. The next prime is 231216229. The reversal of 231216193 is 391612132.

It is a cyclic number.

It is not a de Polignac number, because 231216193 - 2¹ = 231216191 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231216191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156448 + ... + 157918.

It is an arithmetic number, because the mean of its divisors is an integer number (15857856).

Almost surely, 2^231216193 is an apocalyptic number.

It is an amenable number.

231216193 is a deficient number, since it is larger than the sum of its proper divisors (22509503).

231216193 is a wasteful number, since it uses less digits than its factorization.

231216193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704.

The product of its digits is 1944, while the sum is 28.

The square root of 231216193 is about 15205.7947178041. The cubic root of 231216193 is about 613.7706006417.

The spelling of 231216193 in words is "two hundred thirty-one million, two hundred sixteen thousand, one hundred ninety-three".