231884317 has 6 divisors (see below), whose sum is σ = 269743038. Its totient is φ = 198757944.

The previous prime is 231884299. The next prime is 231884329. The reversal of 231884317 is 713488132.

231884317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 231374521 + 509796 = 15211^2 + 714^2 .

It is not a de Polignac number, because 231884317 - 2¹¹ = 231882269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231884117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2366118 + ... + 2366215.

It is an arithmetic number, because the mean of its divisors is an integer number (44957173).

Almost surely, 2^231884317 is an apocalyptic number.

It is an amenable number.

231884317 is a deficient number, since it is larger than the sum of its proper divisors (37858721).

231884317 is an equidigital number, since it uses as much as digits as its factorization.

231884317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4732347 (or 4732340 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 231884317 is about 15227.7482577038. The cubic root of 231884317 is about 614.3612174597.

The spelling of 231884317 in words is "two hundred thirty-one million, eight hundred eighty-four thousand, three hundred seventeen".