344721073 has 2 divisors, whose sum is σ = 344721074. Its totient is φ = 344721072.

The previous prime is 344721061. The next prime is 344721089. The reversal of 344721073 is 370127443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 252714609 + 92006464 = 15897^2 + 9592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-344721073 is a prime.

It is not a weakly prime, because it can be changed into another prime (344721043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172360536 + 172360537.

It is an arithmetic number, because the mean of its divisors is an integer number (172360537).

Almost surely, 2^344721073 is an apocalyptic number.

It is an amenable number.

344721073 is a deficient number, since it is larger than the sum of its proper divisors (1).

344721073 is an equidigital number, since it uses as much as digits as its factorization.

344721073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 344721073 is about 18566.6656403351. The cubic root of 344721073 is about 701.1688451600.

The spelling of 344721073 in words is "three hundred forty-four million, seven hundred twenty-one thousand, seventy-three".