421233343 has 2 divisors, whose sum is σ = 421233344. Its totient is φ = 421233342.

The previous prime is 421233341. The next prime is 421233349. The reversal of 421233343 is 343332124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421233343 - 2¹ = 421233341 is a prime.

Together with 421233341, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421233341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210616671 + 210616672.

It is an arithmetic number, because the mean of its divisors is an integer number (210616672).

Almost surely, 2^421233343 is an apocalyptic number.

421233343 is a deficient number, since it is larger than the sum of its proper divisors (1).

421233343 is an equidigital number, since it uses as much as digits as its factorization.

421233343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 25.

The square root of 421233343 is about 20523.9699619737. The cubic root of 421233343 is about 749.6195658739.

Adding to 421233343 its reverse (343332124), we get a palindrome (764565467).

The spelling of 421233343 in words is "four hundred twenty-one million, two hundred thirty-three thousand, three hundred forty-three".