445203313 has 2 divisors, whose sum is σ = 445203314. Its totient is φ = 445203312.

The previous prime is 445203289. The next prime is 445203377. The reversal of 445203313 is 313302544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435014449 + 10188864 = 20857^2 + 3192^2 .

It is a cyclic number.

It is not a de Polignac number, because 445203313 - 2⁵ = 445203281 is a prime.

It is not a weakly prime, because it can be changed into another prime (445203013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222601656 + 222601657.

It is an arithmetic number, because the mean of its divisors is an integer number (222601657).

Almost surely, 2^445203313 is an apocalyptic number.

It is an amenable number.

445203313 is a deficient number, since it is larger than the sum of its proper divisors (1).

445203313 is an equidigital number, since it uses as much as digits as its factorization.

445203313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 445203313 is about 21099.8415396893. The cubic root of 445203313 is about 763.5769252176.

Adding to 445203313 its reverse (313302544), we get a palindrome (758505857).

The spelling of 445203313 in words is "four hundred forty-five million, two hundred three thousand, three hundred thirteen".