421241311 has 2 divisors, whose sum is σ = 421241312. Its totient is φ = 421241310.

The previous prime is 421241309. The next prime is 421241321. The reversal of 421241311 is 113142124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421241311 - 2¹ = 421241309 is a prime.

Together with 421241309, 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 (421241321) 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, 210620655 + 210620656.

It is an arithmetic number, because the mean of its divisors is an integer number (210620656).

Almost surely, 2^421241311 is an apocalyptic number.

421241311 is a deficient number, since it is larger than the sum of its proper divisors (1).

421241311 is an equidigital number, since it uses as much as digits as its factorization.

421241311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 19.

The square root of 421241311 is about 20524.1640755476. The cubic root of 421241311 is about 749.6242924158.

Adding to 421241311 its reverse (113142124), we get a palindrome (534383435).

The spelling of 421241311 in words is "four hundred twenty-one million, two hundred forty-one thousand, three hundred eleven".