421244311 has 2 divisors, whose sum is σ = 421244312. Its totient is φ = 421244310.

The previous prime is 421244303. The next prime is 421244347. The reversal of 421244311 is 113442124.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421244311 - 2³ = 421244303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421244381) 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, 210622155 + 210622156.

It is an arithmetic number, because the mean of its divisors is an integer number (210622156).

Almost surely, 2^421244311 is an apocalyptic number.

421244311 is a deficient number, since it is larger than the sum of its proper divisors (1).

421244311 is an equidigital number, since it uses as much as digits as its factorization.

421244311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 22.

The square root of 421244311 is about 20524.2371600018. The cubic root of 421244311 is about 749.6260719718.

Adding to 421244311 its reverse (113442124), we get a palindrome (534686435).

The spelling of 421244311 in words is "four hundred twenty-one million, two hundred forty-four thousand, three hundred eleven".