344320145 has 8 divisors (see below), whose sum is σ = 444967656. Its totient is φ = 254267136.

The previous prime is 344320121. The next prime is 344320181. The reversal of 344320145 is 541023443.

It can be written as a sum of positive squares in 4 ways, for example, as 1181569 + 343138576 = 1087^2 + 18524^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 344320145 - 2⁸ = 344319889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2648552 + ... + 2648681.

It is an arithmetic number, because the mean of its divisors is an integer number (55620957).

Almost surely, 2^344320145 is an apocalyptic number.

It is an amenable number.

344320145 is a deficient number, since it is larger than the sum of its proper divisors (100647511).

344320145 is a wasteful number, since it uses less digits than its factorization.

344320145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5297251.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 344320145 is about 18555.8655147099. The cubic root of 344320145 is about 700.8969081263.

Adding to 344320145 its reverse (541023443), we get a palindrome (885343588).

The spelling of 344320145 in words is "three hundred forty-four million, three hundred twenty thousand, one hundred forty-five".