421043443331 has 8 divisors (see below), whose sum is σ = 481235825664. Its totient is φ = 360861890760.

The previous prime is 421043443321. The next prime is 421043443339. The reversal of 421043443331 is 133344340124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 421043443331 - 2²² = 421039249027 is a prime.

It is a super-2 number, since 2×421043443331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421043443339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2623955 + ... + 2779788.

It is an arithmetic number, because the mean of its divisors is an integer number (60154478208).

Almost surely, 2^421043443331 is an apocalyptic number.

421043443331 is a deficient number, since it is larger than the sum of its proper divisors (60192382333).

421043443331 is a wasteful number, since it uses less digits than its factorization.

421043443331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5414881.

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 421043443331 its reverse (133344340124), we get a palindrome (554387783455).

The spelling of 421043443331 in words is "four hundred twenty-one billion, forty-three million, four hundred forty-three thousand, three hundred thirty-one".