421331031323 has 2 divisors, whose sum is σ = 421331031324. Its totient is φ = 421331031322.

The previous prime is 421331031301. The next prime is 421331031343. The reversal of 421331031323 is 323130133124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421331031323 - 2²⁴ = 421314254107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421331031292 and 421331031301.

It is not a weakly prime, because it can be changed into another prime (421331031343) 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, 210665515661 + 210665515662.

It is an arithmetic number, because the mean of its divisors is an integer number (210665515662).

Almost surely, 2^421331031323 is an apocalyptic number.

421331031323 is a deficient number, since it is larger than the sum of its proper divisors (1).

421331031323 is an equidigital number, since it uses as much as digits as its factorization.

421331031323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 421331031323 its reverse (323130133124), we get a palindrome (744461164447).

The spelling of 421331031323 in words is "four hundred twenty-one billion, three hundred thirty-one million, thirty-one thousand, three hundred twenty-three".