344320073 has 4 divisors (see below), whose sum is σ = 351646080. Its totient is φ = 336994068.

The previous prime is 344320063. The next prime is 344320079. The reversal of 344320073 is 370023443.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 344320073 - 2¹⁰ = 344319049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (344320079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3662933 + ... + 3663026.

It is an arithmetic number, because the mean of its divisors is an integer number (87911520).

Almost surely, 2^344320073 is an apocalyptic number.

It is an amenable number.

344320073 is a deficient number, since it is larger than the sum of its proper divisors (7326007).

344320073 is an equidigital number, since it uses as much as digits as its factorization.

344320073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7326006.

The product of its (nonzero) digits is 6048, while the sum is 26.

The square root of 344320073 is about 18555.8635746224. The cubic root of 344320073 is about 700.8968592720.

The spelling of 344320073 in words is "three hundred forty-four million, three hundred twenty thousand, seventy-three".