201323012180 has 24 divisors (see below), whose sum is σ = 427872043872. Its totient is φ = 79558972832.

The previous prime is 201323012179. The next prime is 201323012221. The reversal of 201323012180 is 81210323102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60637802 + ... + 60641121.

It is an arithmetic number, because the mean of its divisors is an integer number (17828001828).

Almost surely, 2^201323012180 is an apocalyptic number.

201323012180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201323012180 is an abundant number, since it is smaller than the sum of its proper divisors (226549031692).

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

201323012180 is a wasteful number, since it uses less digits than its factorization.

201323012180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121279015 (or 121279013 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 201323012180 its reverse (81210323102), we get a palindrome (282533335282).

The spelling of 201323012180 in words is "two hundred one billion, three hundred twenty-three million, twelve thousand, one hundred eighty".