200312320 has 120 divisors (see below), whose sum is σ = 521189856. Its totient is φ = 73801728.

The previous prime is 200312311. The next prime is 200312323. The reversal of 200312320 is 23213002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 200312320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200312323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 432409 + ... + 432871.

Almost surely, 2^200312320 is an apocalyptic number.

200312320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200312320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260594928).

200312320 is an abundant number, since it is smaller than the sum of its proper divisors (320877536).

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

200312320 is an equidigital number, since it uses as much as digits as its factorization.

200312320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 200312320 is about 14153.1734957217. The cubic root of 200312320 is about 585.1077990645.

Adding to 200312320 its reverse (23213002), we get a palindrome (223525322).

The spelling of 200312320 in words is "two hundred million, three hundred twelve thousand, three hundred twenty".