344343421 has 2 divisors, whose sum is σ = 344343422. Its totient is φ = 344343420.

The previous prime is 344343413. The next prime is 344343463. The reversal of 344343421 is 124343443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 298252900 + 46090521 = 17270^2 + 6789^2 .

It is a cyclic number.

It is not a de Polignac number, because 344343421 - 2³ = 344343413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 344343421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344343401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172171710 + 172171711.

It is an arithmetic number, because the mean of its divisors is an integer number (172171711).

Almost surely, 2^344343421 is an apocalyptic number.

It is an amenable number.

344343421 is a deficient number, since it is larger than the sum of its proper divisors (1).

344343421 is an equidigital number, since it uses as much as digits as its factorization.

344343421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 28.

The square root of 344343421 is about 18556.4926912388. The cubic root of 344343421 is about 700.9127012858.

Adding to 344343421 its reverse (124343443), we get a palindrome (468686864).

It can be divided in two parts, 3443 and 43421, that added together give a palindrome (46864).

The spelling of 344343421 in words is "three hundred forty-four million, three hundred forty-three thousand, four hundred twenty-one".