331231243 has 16 divisors (see below), whose sum is σ = 392244480. Its totient is φ = 273674016.

The previous prime is 331231189. The next prime is 331231253. The reversal of 331231243 is 342132133.

It is not a de Polignac number, because 331231243 - 2¹⁷ = 331100171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331231253) 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, 191380 + ... + 193102.

It is an arithmetic number, because the mean of its divisors is an integer number (24515280).

Almost surely, 2^331231243 is an apocalyptic number.

331231243 is a deficient number, since it is larger than the sum of its proper divisors (61013237).

331231243 is a wasteful number, since it uses less digits than its factorization.

331231243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706.

The product of its digits is 1296, while the sum is 22.

The square root of 331231243 is about 18199.7594214869. The cubic root of 331231243 is about 691.9006917254.

Adding to 331231243 its reverse (342132133), we get a palindrome (673363376).

The spelling of 331231243 in words is "three hundred thirty-one million, two hundred thirty-one thousand, two hundred forty-three".