823200001 has 4 divisors (see below), whose sum is σ = 886523092. Its totient is φ = 759876912.

The previous prime is 823199977. The next prime is 823200019. The reversal of 823200001 is 100002328.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57017601 + 766182400 = 7551^2 + 27680^2 .

It is a cyclic number.

It is not a de Polignac number, because 823200001 - 2¹⁷ = 823068929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (823200031) 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, 31661526 + ... + 31661551.

It is an arithmetic number, because the mean of its divisors is an integer number (221630773).

Almost surely, 2^823200001 is an apocalyptic number.

It is an amenable number.

823200001 is a deficient number, since it is larger than the sum of its proper divisors (63323091).

823200001 is a wasteful number, since it uses less digits than its factorization.

823200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63323090.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 823200001 is about 28691.4621621137. The cubic root of 823200001 is about 937.2061304945.

Adding to 823200001 its reverse (100002328), we get a palindrome (923202329).

The spelling of 823200001 in words is "eight hundred twenty-three million, two hundred thousand, one".