320410997 has 2 divisors, whose sum is σ = 320410998. Its totient is φ = 320410996.

The previous prime is 320410963. The next prime is 320411027. The reversal of 320410997 is 799014023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252364996 + 68046001 = 15886^2 + 8249^2 .

It is a cyclic number.

It is not a de Polignac number, because 320410997 - 2¹² = 320406901 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320410957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160205498 + 160205499.

It is an arithmetic number, because the mean of its divisors is an integer number (160205499).

Almost surely, 2^320410997 is an apocalyptic number.

It is an amenable number.

320410997 is a deficient number, since it is larger than the sum of its proper divisors (1).

320410997 is an equidigital number, since it uses as much as digits as its factorization.

320410997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 320410997 is about 17900.0278491403. The cubic root of 320410997 is about 684.2830846360.

The spelling of 320410997 in words is "three hundred twenty million, four hundred ten thousand, nine hundred ninety-seven".