397321303 has 2 divisors, whose sum is σ = 397321304. Its totient is φ = 397321302.

The previous prime is 397321289. The next prime is 397321307. The reversal of 397321303 is 303123793.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 397321303 - 2⁵ = 397321271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397321307) 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, 198660651 + 198660652.

It is an arithmetic number, because the mean of its divisors is an integer number (198660652).

Almost surely, 2^397321303 is an apocalyptic number.

397321303 is a deficient number, since it is larger than the sum of its proper divisors (1).

397321303 is an equidigital number, since it uses as much as digits as its factorization.

397321303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 31.

The square root of 397321303 is about 19932.9200821154. The cubic root of 397321303 is about 735.1578805335.

The spelling of 397321303 in words is "three hundred ninety-seven million, three hundred twenty-one thousand, three hundred three".