421831323 has 12 divisors (see below), whose sum is σ = 617025760. Its totient is φ = 277660656.

The previous prime is 421831321. The next prime is 421831351. The reversal of 421831323 is 323138124.

It is not a de Polignac number, because 421831323 - 2¹ = 421831321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421831321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 295936 + ... + 297357.

Almost surely, 2^421831323 is an apocalyptic number.

421831323 is a deficient number, since it is larger than the sum of its proper divisors (195194437).

421831323 is a wasteful number, since it uses less digits than its factorization.

421831323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593378 (or 593375 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 421831323 is about 20538.5326398942. The cubic root of 421831323 is about 749.9741164401.

Adding to 421831323 its reverse (323138124), we get a palindrome (744969447).

It can be divided in two parts, 421 and 831323, that added together give a square (831744 = 912²).

The spelling of 421831323 in words is "four hundred twenty-one million, eight hundred thirty-one thousand, three hundred twenty-three".