201311201303 has 4 divisors (see below), whose sum is σ = 205594418400. Its totient is φ = 197027984208.

The previous prime is 201311201279. The next prime is 201311201317. The reversal of 201311201303 is 303102113102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201311201303 - 2²⁰ = 201310152727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201311201393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2141608478 + ... + 2141608571.

It is an arithmetic number, because the mean of its divisors is an integer number (51398604600).

Almost surely, 2^201311201303 is an apocalyptic number.

201311201303 is a deficient number, since it is larger than the sum of its proper divisors (4283217097).

201311201303 is an equidigital number, since it uses as much as digits as its factorization.

201311201303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4283217096.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 201311201303 its reverse (303102113102), we get a palindrome (504413314405).

The spelling of 201311201303 in words is "two hundred one billion, three hundred eleven million, two hundred one thousand, three hundred three".