420881323 has 2 divisors, whose sum is σ = 420881324. Its totient is φ = 420881322.

The previous prime is 420881317. The next prime is 420881333. The reversal of 420881323 is 323188024.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420881323 is a prime.

It is not a weakly prime, because it can be changed into another prime (420881333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210440661 + 210440662.

It is an arithmetic number, because the mean of its divisors is an integer number (210440662).

Almost surely, 2^420881323 is an apocalyptic number.

420881323 is a deficient number, since it is larger than the sum of its proper divisors (1).

420881323 is an equidigital number, since it uses as much as digits as its factorization.

420881323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 420881323 is about 20515.3923433114. The cubic root of 420881323 is about 749.4106914456.

The spelling of 420881323 in words is "four hundred twenty million, eight hundred eighty-one thousand, three hundred twenty-three".