346144321 has 2 divisors, whose sum is σ = 346144322. Its totient is φ = 346144320.

The previous prime is 346144307. The next prime is 346144369. The reversal of 346144321 is 123441643.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230280625 + 115863696 = 15175^2 + 10764^2 .

It is a cyclic number.

It is not a de Polignac number, because 346144321 - 2¹¹ = 346142273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 346144321.

It is not a weakly prime, because it can be changed into another prime (346144301) 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 as a sum of consecutive naturals, namely, 173072160 + 173072161.

It is an arithmetic number, because the mean of its divisors is an integer number (173072161).

Almost surely, 2^346144321 is an apocalyptic number.

It is an amenable number.

346144321 is a deficient number, since it is larger than the sum of its proper divisors (1).

346144321 is an equidigital number, since it uses as much as digits as its factorization.

346144321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 28.

The square root of 346144321 is about 18604.9542058023. The cubic root of 346144321 is about 702.1324908275.

Adding to 346144321 its reverse (123441643), we get a palindrome (469585964).

The spelling of 346144321 in words is "three hundred forty-six million, one hundred forty-four thousand, three hundred twenty-one".