2061131321 has 2 divisors, whose sum is σ = 2061131322. Its totient is φ = 2061131320.

The previous prime is 2061131299. The next prime is 2061131329. The reversal of 2061131321 is 1231311602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1930372096 + 130759225 = 43936^2 + 11435^2 .

It is a cyclic number.

It is not a de Polignac number, because 2061131321 - 2¹⁰ = 2061130297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2061131293 and 2061131302.

It is not a weakly prime, because it can be changed into another prime (2061131329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030565660 + 1030565661.

It is an arithmetic number, because the mean of its divisors is an integer number (1030565661).

Almost surely, 2^2061131321 is an apocalyptic number.

It is an amenable number.

2061131321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2061131321 is an equidigital number, since it uses as much as digits as its factorization.

2061131321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 2061131321 is about 45399.6841508837. The cubic root of 2061131321 is about 1272.6292114075.

Adding to 2061131321 its reverse (1231311602), we get a palindrome (3292442923).

The spelling of 2061131321 in words is "two billion, sixty-one million, one hundred thirty-one thousand, three hundred twenty-one".