2131211333 has 4 divisors (see below), whose sum is σ = 2131345260. Its totient is φ = 2131077408.

The previous prime is 2131211311. The next prime is 2131211353. The reversal of 2131211333 is 3331121312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1850548324 + 280663009 = 43018^2 + 16753^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131211333 - 2⁸ = 2131211077 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 (2131211353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39278 + ... + 76191.

It is an arithmetic number, because the mean of its divisors is an integer number (532836315).

Almost surely, 2^2131211333 is an apocalyptic number.

It is an amenable number.

2131211333 is a deficient number, since it is larger than the sum of its proper divisors (133927).

2131211333 is a wasteful number, since it uses less digits than its factorization.

2131211333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133926.

The product of its digits is 324, while the sum is 20.

The square root of 2131211333 is about 46165.0444925595. The cubic root of 2131211333 is about 1286.8922110436.

Adding to 2131211333 its reverse (3331121312), we get a palindrome (5462332645).

The spelling of 2131211333 in words is "two billion, one hundred thirty-one million, two hundred eleven thousand, three hundred thirty-three".