200312443 has 4 divisors (see below), whose sum is σ = 202257328. Its totient is φ = 198367560.

The previous prime is 200312423. The next prime is 200312473. The reversal of 200312443 is 344213002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200312443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200312443.

It is not an unprimeable number, because it can be changed into a prime (200312423) 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, 972288 + ... + 972493.

It is an arithmetic number, because the mean of its divisors is an integer number (50564332).

Almost surely, 2^200312443 is an apocalyptic number.

200312443 is a deficient number, since it is larger than the sum of its proper divisors (1944885).

200312443 is a wasteful number, since it uses less digits than its factorization.

200312443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944884.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 200312443 is about 14153.1778410363. The cubic root of 200312443 is about 585.1079188245.

Adding to 200312443 its reverse (344213002), we get a palindrome (544525445).

The spelling of 200312443 in words is "two hundred million, three hundred twelve thousand, four hundred forty-three".