421344441303 has 16 divisors (see below), whose sum is σ = 571101542400. Its totient is φ = 276243418080.

The previous prime is 421344441289. The next prime is 421344441317. The reversal of 421344441303 is 303144443124.

It is an interprime number because it is at equal distance from previous prime (421344441289) and next prime (421344441317).

It is not a de Polignac number, because 421344441303 - 2⁹ = 421344440791 is a prime.

It is a super-2 number, since 2×421344441303² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421344441383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 871378 + ... + 1265696.

It is an arithmetic number, because the mean of its divisors is an integer number (35693846400).

Almost surely, 2^421344441303 is an apocalyptic number.

421344441303 is a deficient number, since it is larger than the sum of its proper divisors (149757101097).

421344441303 is a wasteful number, since it uses less digits than its factorization.

421344441303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400222.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 421344441303 its reverse (303144443124), we get a palindrome (724488884427).

The spelling of 421344441303 in words is "four hundred twenty-one billion, three hundred forty-four million, four hundred forty-one thousand, three hundred three".