2131201333 has 6 divisors (see below), whose sum is σ = 2143073922. Its totient is φ = 2119394160.

The previous prime is 2131201309. The next prime is 2131201337. The reversal of 2131201333 is 3331021312.

It can be written as a sum of positive squares in 3 ways, for example, as 646023889 + 1485177444 = 25417^2 + 38538^2 .

It is not a de Polignac number, because 2131201333 - 2⁹ = 2131200821 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2131201333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131201337) 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, 235 + ... + 65287.

It is an arithmetic number, because the mean of its divisors is an integer number (357178987).

Almost surely, 2^2131201333 is an apocalyptic number.

It is an amenable number.

2131201333 is a deficient number, since it is larger than the sum of its proper divisors (11872589).

2131201333 is an frugal number, since it uses more digits than its factorization.

2131201333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65415 (or 65234 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 2131201333 is about 46164.9361853778. The cubic root of 2131201333 is about 1286.8901982693.

Adding to 2131201333 its reverse (3331021312), we get a palindrome (5462222645).

The spelling of 2131201333 in words is "two billion, one hundred thirty-one million, two hundred one thousand, three hundred thirty-three".