201311232201 has 8 divisors (see below), whose sum is σ = 298238862560. Its totient is φ = 134207488116.

The previous prime is 201311232191. The next prime is 201311232203. The reversal of 201311232201 is 102232113102.

201311232201 is a `hidden beast` number, since 201 + 31 + 1 + 232 + 201 = 666.

It is not a de Polignac number, because 201311232201 - 2⁶ = 201311232137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201311232203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3727985755 + ... + 3727985808.

It is an arithmetic number, because the mean of its divisors is an integer number (37279857820).

Almost surely, 2^201311232201 is an apocalyptic number.

It is an amenable number.

201311232201 is a deficient number, since it is larger than the sum of its proper divisors (96927630359).

201311232201 is an equidigital number, since it uses as much as digits as its factorization.

201311232201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7455971572 (or 7455971566 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 201311232201 its reverse (102232113102), we get a palindrome (303543345303).

The spelling of 201311232201 in words is "two hundred one billion, three hundred eleven million, two hundred thirty-two thousand, two hundred one".