421446313 has 2 divisors, whose sum is σ = 421446314. Its totient is φ = 421446312.

The previous prime is 421446307. The next prime is 421446331. The reversal of 421446313 is 313644124.

Together with next prime (421446331) 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., 398521369 + 22924944 = 19963^2 + 4788^2 .

It is a cyclic number.

It is not a de Polignac number, because 421446313 - 2¹⁷ = 421315241 is a prime.

It is not a weakly prime, because it can be changed into another prime (421446343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210723156 + 210723157.

It is an arithmetic number, because the mean of its divisors is an integer number (210723157).

Almost surely, 2^421446313 is an apocalyptic number.

It is an amenable number.

421446313 is a deficient number, since it is larger than the sum of its proper divisors (1).

421446313 is an equidigital number, since it uses as much as digits as its factorization.

421446313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 28.

The square root of 421446313 is about 20529.1576300636. The cubic root of 421446313 is about 749.7458771644.

The spelling of 421446313 in words is "four hundred twenty-one million, four hundred forty-six thousand, three hundred thirteen".