2131321133 has 16 divisors (see below), whose sum is σ = 2190576960. Its totient is φ = 2072977536.

The previous prime is 2131321111. The next prime is 2131321169. The reversal of 2131321133 is 3311231312.

It is a cyclic number.

It is not a de Polignac number, because 2131321133 - 2¹⁸ = 2131058989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131321103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2707766 + ... + 2708552.

It is an arithmetic number, because the mean of its divisors is an integer number (136911060).

Almost surely, 2^2131321133 is an apocalyptic number.

It is an amenable number.

2131321133 is a deficient number, since it is larger than the sum of its proper divisors (59255827).

2131321133 is a wasteful number, since it uses less digits than its factorization.

2131321133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276.

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

The square root of 2131321133 is about 46166.2336887037. The cubic root of 2131321133 is about 1286.9143108914.

Adding to 2131321133 its reverse (3311231312), we get a palindrome (5442552445).

The spelling of 2131321133 in words is "two billion, one hundred thirty-one million, three hundred twenty-one thousand, one hundred thirty-three".