331431241 has 2 divisors, whose sum is σ = 331431242. Its totient is φ = 331431240.

The previous prime is 331431223. The next prime is 331431251. The reversal of 331431241 is 142134133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 331422025 + 9216 = 18205^2 + 96^2 .

It is a cyclic number.

It is not a de Polignac number, because 331431241 - 2²⁵ = 297876809 is a prime.

It is not a weakly prime, because it can be changed into another prime (331431251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165715620 + 165715621.

It is an arithmetic number, because the mean of its divisors is an integer number (165715621).

Almost surely, 2^331431241 is an apocalyptic number.

It is an amenable number.

331431241 is a deficient number, since it is larger than the sum of its proper divisors (1).

331431241 is an equidigital number, since it uses as much as digits as its factorization.

331431241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 22.

The square root of 331431241 is about 18205.2531155159. The cubic root of 331431241 is about 692.0399206535.

Adding to 331431241 its reverse (142134133), we get a palindrome (473565374).

The spelling of 331431241 in words is "three hundred thirty-one million, four hundred thirty-one thousand, two hundred forty-one".