402501313 has 2 divisors, whose sum is σ = 402501314. Its totient is φ = 402501312.

The previous prime is 402501293. The next prime is 402501331. The reversal of 402501313 is 313105204.

Together with next prime (402501331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402082704 + 418609 = 20052^2 + 647^2 .

It is a cyclic number.

It is not a de Polignac number, because 402501313 - 2⁹ = 402500801 is a prime.

It is not a weakly prime, because it can be changed into another prime (402501413) 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, 201250656 + 201250657.

It is an arithmetic number, because the mean of its divisors is an integer number (201250657).

Almost surely, 2^402501313 is an apocalyptic number.

It is an amenable number.

402501313 is a deficient number, since it is larger than the sum of its proper divisors (1).

402501313 is an equidigital number, since it uses as much as digits as its factorization.

402501313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 402501313 is about 20062.4353706124. The cubic root of 402501313 is about 738.3389288127.

Adding to 402501313 its reverse (313105204), we get a palindrome (715606517).

The spelling of 402501313 in words is "four hundred two million, five hundred one thousand, three hundred thirteen".