421323319 has 2 divisors, whose sum is σ = 421323320. Its totient is φ = 421323318.

The previous prime is 421323313. The next prime is 421323337. The reversal of 421323319 is 913323124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421323319 - 2⁹ = 421322807 is a prime.

It is a super-2 number, since 2×421323319² = 355026678266351522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421323313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210661659 + 210661660.

It is an arithmetic number, because the mean of its divisors is an integer number (210661660).

Almost surely, 2^421323319 is an apocalyptic number.

421323319 is a deficient number, since it is larger than the sum of its proper divisors (1).

421323319 is an equidigital number, since it uses as much as digits as its factorization.

421323319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 28.

The square root of 421323319 is about 20526.1618185183. The cubic root of 421323319 is about 749.6729353183.

It can be divided in two parts, 42132 and 3319, that added together give a triangular number (45451 = T₃₀₁).

The spelling of 421323319 in words is "four hundred twenty-one million, three hundred twenty-three thousand, three hundred nineteen".