397303523 has 2 divisors, whose sum is σ = 397303524. Its totient is φ = 397303522.

The previous prime is 397303469. The next prime is 397303537. The reversal of 397303523 is 325303793.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 397303523 - 2¹⁶ = 397237987 is a prime.

It is not a weakly prime, because it can be changed into another prime (397303573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198651761 + 198651762.

It is an arithmetic number, because the mean of its divisors is an integer number (198651762).

Almost surely, 2^397303523 is an apocalyptic number.

397303523 is a deficient number, since it is larger than the sum of its proper divisors (1).

397303523 is an equidigital number, since it uses as much as digits as its factorization.

397303523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51030, while the sum is 35.

The square root of 397303523 is about 19932.4740812574. The cubic root of 397303523 is about 735.1469143440.

The spelling of 397303523 in words is "three hundred ninety-seven million, three hundred three thousand, five hundred twenty-three".