200320155 has 32 divisors (see below), whose sum is σ = 407001600. Its totient is φ = 91574496.

The previous prime is 200320147. The next prime is 200320177. The reversal of 200320155 is 551023002.

It is a happy number.

It is not a de Polignac number, because 200320155 - 2³ = 200320147 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105045 + ... + 106934.

It is an arithmetic number, because the mean of its divisors is an integer number (12718800).

Almost surely, 2^200320155 is an apocalyptic number.

200320155 is an abundant number, since it is smaller than the sum of its proper divisors (206681445).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

200320155 is a wasteful number, since it uses less digits than its factorization.

200320155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212000 (or 211994 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 200320155 is about 14153.4502860610. The cubic root of 200320155 is about 585.1154275848.

Adding to 200320155 its reverse (551023002), we get a palindrome (751343157).

The spelling of 200320155 in words is "two hundred million, three hundred twenty thousand, one hundred fifty-five".