421213340310343 has 16 divisors (see below), whose sum is σ = 483694060202496. Its totient is φ = 359312177141280.

The previous prime is 421213340310331. The next prime is 421213340310349. The reversal of 421213340310343 is 343013043312124.

It is a cyclic number.

It is not a de Polignac number, because 421213340310343 - 2²¹ = 421213338213191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421213340310299 and 421213340310308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421213340310349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111064953 + ... + 114794818.

It is an arithmetic number, because the mean of its divisors is an integer number (30230878762656).

Almost surely, 2^{421213340310343} is an apocalyptic number.

421213340310343 is a deficient number, since it is larger than the sum of its proper divisors (62480719892153).

421213340310343 is a wasteful number, since it uses less digits than its factorization.

421213340310343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225861054.

The product of its (nonzero) digits is 62208, while the sum is 34.

Adding to 421213340310343 its reverse (343013043312124), we get a palindrome (764226383622467).

The spelling of 421213340310343 in words is "four hundred twenty-one trillion, two hundred thirteen billion, three hundred forty million, three hundred ten thousand, three hundred forty-three".