201323123200 has 60 divisors (see below), whose sum is σ = 498793797810. Its totient is φ = 80529244160.

The previous prime is 201323123189. The next prime is 201323123201. The reversal of 201323123200 is 2321323102.

It can be written as a sum of positive squares in 3 ways, for example, as 113014302976 + 88308820224 = 336176^2 + 297168^2 .

It is not an unprimeable number, because it can be changed into a prime (201323123201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7851385 + ... + 7876984.

Almost surely, 2^201323123200 is an apocalyptic number.

201323123200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201323123200 is an abundant number, since it is smaller than the sum of its proper divisors (297470674610).

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

201323123200 is an equidigital number, since it uses as much as digits as its factorization.

201323123200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15728397 (or 15728376 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 201323123200 its reverse (2321323102), we get a palindrome (203644446302).

The spelling of 201323123200 in words is "two hundred one billion, three hundred twenty-three million, one hundred twenty-three thousand, two hundred".