2001200323 has 2 divisors, whose sum is σ = 2001200324. Its totient is φ = 2001200322.

The previous prime is 2001200239. The next prime is 2001200329. The reversal of 2001200323 is 3230021002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001200323 - 2¹³ = 2001192131 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001200329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000600161 + 1000600162.

It is an arithmetic number, because the mean of its divisors is an integer number (1000600162).

Almost surely, 2^2001200323 is an apocalyptic number.

2001200323 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001200323 is an equidigital number, since it uses as much as digits as its factorization.

2001200323 is an evil number, because the sum of its binary digits is even.

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

The square root of 2001200323 is about 44734.7775561699. Note that the first 3 decimals coincide. The cubic root of 2001200323 is about 1260.1730515234.

Adding to 2001200323 its reverse (3230021002), we get a palindrome (5231221325).

The spelling of 2001200323 in words is "two billion, one million, two hundred thousand, three hundred twenty-three".