421000313 has 2 divisors, whose sum is σ = 421000314. Its totient is φ = 421000312.

The previous prime is 421000297. The next prime is 421000331. The reversal of 421000313 is 313000124.

Together with next prime (421000331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 340144249 + 80856064 = 18443^2 + 8992^2 .

It is a cyclic number.

It is not a de Polignac number, because 421000313 - 2⁴ = 421000297 is a prime.

It is not a weakly prime, because it can be changed into another prime (421000343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210500156 + 210500157.

It is an arithmetic number, because the mean of its divisors is an integer number (210500157).

Almost surely, 2^421000313 is an apocalyptic number.

It is an amenable number.

421000313 is a deficient number, since it is larger than the sum of its proper divisors (1).

421000313 is an equidigital number, since it uses as much as digits as its factorization.

421000313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 421000313 is about 20518.2921560251. The cubic root of 421000313 is about 749.4813083243.

Adding to 421000313 its reverse (313000124), we get a palindrome (734000437).

The spelling of 421000313 in words is "four hundred twenty-one million, three hundred thirteen", and thus it is an aban number.