331324481 has 2 divisors, whose sum is σ = 331324482. Its totient is φ = 331324480.

The previous prime is 331324459. The next prime is 331324561. The reversal of 331324481 is 184423133.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238857025 + 92467456 = 15455^2 + 9616^2 .

It is a cyclic number.

It is not a de Polignac number, because 331324481 - 2¹⁰ = 331323457 is a prime.

It is a super-2 number, since 2×331324481² = 219551823419838722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (331324421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165662240 + 165662241.

It is an arithmetic number, because the mean of its divisors is an integer number (165662241).

Almost surely, 2^331324481 is an apocalyptic number.

It is an amenable number.

331324481 is a deficient number, since it is larger than the sum of its proper divisors (1).

331324481 is an equidigital number, since it uses as much as digits as its factorization.

331324481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 29.

The square root of 331324481 is about 18202.3207586286. The cubic root of 331324481 is about 691.9656064800.

The spelling of 331324481 in words is "three hundred thirty-one million, three hundred twenty-four thousand, four hundred eighty-one".