201331432523 has 8 divisors (see below), whose sum is σ = 217301364000. Its totient is φ = 185430486528.

The previous prime is 201331432513. The next prime is 201331432537. The reversal of 201331432523 is 325234133102.

It is a happy number.

201331432523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201331432523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201331432513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17240303 + ... + 17251976.

It is an arithmetic number, because the mean of its divisors is an integer number (27162670500).

Almost surely, 2^201331432523 is an apocalyptic number.

201331432523 is a deficient number, since it is larger than the sum of its proper divisors (15969931477).

201331432523 is a wasteful number, since it uses less digits than its factorization.

201331432523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34492741.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 201331432523 its reverse (325234133102), we get a palindrome (526565565625).

The spelling of 201331432523 in words is "two hundred one billion, three hundred thirty-one million, four hundred thirty-two thousand, five hundred twenty-three".