403645313 has 2 divisors, whose sum is σ = 403645314. Its totient is φ = 403645312.

The previous prime is 403645309. The next prime is 403645337. The reversal of 403645313 is 313546304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297493504 + 106151809 = 17248^2 + 10303^2 .

It is a cyclic number.

It is not a de Polignac number, because 403645313 - 2² = 403645309 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (403645303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201822656 + 201822657.

It is an arithmetic number, because the mean of its divisors is an integer number (201822657).

Almost surely, 2^403645313 is an apocalyptic number.

It is an amenable number.

403645313 is a deficient number, since it is larger than the sum of its proper divisors (1).

403645313 is an equidigital number, since it uses as much as digits as its factorization.

403645313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 403645313 is about 20090.9261359451. The cubic root of 403645313 is about 739.0377760217.

Subtracting from 403645313 its reverse (313546304), we obtain a palindrome (90099009).

The spelling of 403645313 in words is "four hundred three million, six hundred forty-five thousand, three hundred thirteen".