344224431421 has 16 divisors (see below), whose sum is σ = 387447911424. Its totient is φ = 303437844864.

The previous prime is 344224431389. The next prime is 344224431433. The reversal of 344224431421 is 124134422443.

It is a cyclic number.

It is not a de Polignac number, because 344224431421 - 2⁵ = 344224431389 is a prime.

It is a super-2 number, since 2×344224431421² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344224432421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 748461 + ... + 1117426.

It is an arithmetic number, because the mean of its divisors is an integer number (24215494464).

Almost surely, 2^344224431421 is an apocalyptic number.

It is an amenable number.

344224431421 is a deficient number, since it is larger than the sum of its proper divisors (43223480003).

344224431421 is a wasteful number, since it uses less digits than its factorization.

344224431421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1866540.

The product of its digits is 73728, while the sum is 34.

Adding to 344224431421 its reverse (124134422443), we get a palindrome (468358853864).

The spelling of 344224431421 in words is "three hundred forty-four billion, two hundred twenty-four million, four hundred thirty-one thousand, four hundred twenty-one".