231344646289 has 9 divisors (see below), whose sum is σ = 232609262907. Its totient is φ = 230086875744.

The previous prime is 231344646257. The next prime is 231344646293. The reversal of 231344646289 is 982646443132.

The square root of 231344646289 is 480983.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 225259398225 + 6085248064 = 474615^2 + 78008^2 .

It is not a de Polignac number, because 231344646289 - 2⁵ = 231344646257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231344676289) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 95714409 + ... + 95716825.

Almost surely, 2^231344646289 is an apocalyptic number.

231344646289 is the 480983-rd square number.

231344646289 is the 240492-nd centered octagonal number.

It is an amenable number.

231344646289 is a deficient number, since it is larger than the sum of its proper divisors (1264616618).

231344646289 is an frugal number, since it uses more digits than its factorization.

231344646289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5232 (or 2616 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 52.

The spelling of 231344646289 in words is "two hundred thirty-one billion, three hundred forty-four million, six hundred forty-six thousand, two hundred eighty-nine".