200345 has 8 divisors (see below), whose sum is σ = 254664. Its totient is φ = 150784.

The previous prime is 200341. The next prime is 200351. The reversal of 200345 is 543002.

200345 = 316² + 317².

200345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 17161 + 183184 = 131^2 + 428^2 .

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 200345 - 2² = 200341 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1094 + ... + 1263.

It is an arithmetic number, because the mean of its divisors is an integer number (31833).

2²⁰⁰³⁴⁵ is an apocalyptic number.

200345 is the 317-th centered square number.

It is an amenable number.

200345 is a deficient number, since it is larger than the sum of its proper divisors (54319).

200345 is a wasteful number, since it uses less digits than its factorization.

200345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 200345 is about 447.5991510269. The cubic root of 200345 is about 58.5139616517.

Adding to 200345 its reverse (543002), we get a palindrome (743347).

It can be divided in two parts, 2003 and 45, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 200345 in words is "two hundred thousand, three hundred forty-five".