201143320 has 64 divisors (see below), whose sum is σ = 547663680. Its totient is φ = 64905216.

The previous prime is 201143311. The next prime is 201143323. The reversal of 201143320 is 23341102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201143294 and 201143303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201143323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16369 + ... + 25888.

It is an arithmetic number, because the mean of its divisors is an integer number (8557245).

Almost surely, 2^201143320 is an apocalyptic number.

201143320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201143320 is an abundant number, since it is smaller than the sum of its proper divisors (346520360).

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

201143320 is a wasteful number, since it uses less digits than its factorization.

201143320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42292 (or 42288 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 201143320 is about 14182.5004847523. The cubic root of 201143320 is about 585.9157935591.

Adding to 201143320 its reverse (23341102), we get a palindrome (224484422).

The spelling of 201143320 in words is "two hundred one million, one hundred forty-three thousand, three hundred twenty".