404503313 has 2 divisors, whose sum is σ = 404503314. Its totient is φ = 404503312.

The previous prime is 404503273. The next prime is 404503327. The reversal of 404503313 is 313305404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378574849 + 25928464 = 19457^2 + 5092^2 .

It is a cyclic number.

It is not a de Polignac number, because 404503313 - 2²⁸ = 136067857 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404503013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202251656 + 202251657.

It is an arithmetic number, because the mean of its divisors is an integer number (202251657).

Almost surely, 2^404503313 is an apocalyptic number.

It is an amenable number.

404503313 is a deficient number, since it is larger than the sum of its proper divisors (1).

404503313 is an equidigital number, since it uses as much as digits as its factorization.

404503313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 404503313 is about 20112.2677239540. The cubic root of 404503313 is about 739.5610453691.

Adding to 404503313 its reverse (313305404), we get a palindrome (717808717).

The spelling of 404503313 in words is "four hundred four million, five hundred three thousand, three hundred thirteen".