200215423 has 4 divisors (see below), whose sum is σ = 205098768. Its totient is φ = 195332080.

The previous prime is 200215361. The next prime is 200215471. The reversal of 200215423 is 324512002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324512002 = 2 ⋅162256001.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200215423 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 200215423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200215493) 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, 2441611 + ... + 2441692.

It is an arithmetic number, because the mean of its divisors is an integer number (51274692).

Almost surely, 2^200215423 is an apocalyptic number.

200215423 is a deficient number, since it is larger than the sum of its proper divisors (4883345).

200215423 is an equidigital number, since it uses as much as digits as its factorization.

200215423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4883344.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 200215423 is about 14149.7499271189. The cubic root of 200215423 is about 585.0134391926.

Adding to 200215423 its reverse (324512002), we get a palindrome (524727425).

The spelling of 200215423 in words is "two hundred million, two hundred fifteen thousand, four hundred twenty-three".