331180489 has 2 divisors, whose sum is σ = 331180490. Its totient is φ = 331180488.

The previous prime is 331180459. The next prime is 331180501. The reversal of 331180489 is 984081133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312759225 + 18421264 = 17685^2 + 4292^2 .

It is a cyclic number.

It is not a de Polignac number, because 331180489 - 2⁵ = 331180457 is a prime.

It is not a weakly prime, because it can be changed into another prime (331180429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165590244 + 165590245.

It is an arithmetic number, because the mean of its divisors is an integer number (165590245).

Almost surely, 2^331180489 is an apocalyptic number.

It is an amenable number.

331180489 is a deficient number, since it is larger than the sum of its proper divisors (1).

331180489 is an equidigital number, since it uses as much as digits as its factorization.

331180489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 331180489 is about 18198.3650089781. The cubic root of 331180489 is about 691.8653503315.

The spelling of 331180489 in words is "three hundred thirty-one million, one hundred eighty thousand, four hundred eighty-nine".