331402273 has 2 divisors, whose sum is σ = 331402274. Its totient is φ = 331402272.

The previous prime is 331402243. The next prime is 331402283. The reversal of 331402273 is 372204133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244390689 + 87011584 = 15633^2 + 9328^2 .

It is a cyclic number.

It is not a de Polignac number, because 331402273 - 2⁵ = 331402241 is a prime.

It is not a weakly prime, because it can be changed into another prime (331402213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165701136 + 165701137.

It is an arithmetic number, because the mean of its divisors is an integer number (165701137).

Almost surely, 2^331402273 is an apocalyptic number.

It is an amenable number.

331402273 is a deficient number, since it is larger than the sum of its proper divisors (1).

331402273 is an equidigital number, since it uses as much as digits as its factorization.

331402273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 331402273 is about 18204.4575035896. The cubic root of 331402273 is about 692.0197580034.

The spelling of 331402273 in words is "three hundred thirty-one million, four hundred two thousand, two hundred seventy-three".