2143515313 has 2 divisors, whose sum is σ = 2143515314. Its totient is φ = 2143515312.

The previous prime is 2143515281. The next prime is 2143515317. The reversal of 2143515313 is 3135153412.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1570774689 + 572740624 = 39633^2 + 23932^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143515313 - 2⁵ = 2143515281 is a prime.

It is not a weakly prime, because it can be changed into another prime (2143515317) 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, 1071757656 + 1071757657.

It is an arithmetic number, because the mean of its divisors is an integer number (1071757657).

Almost surely, 2^2143515313 is an apocalyptic number.

It is an amenable number.

2143515313 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143515313 is an equidigital number, since it uses as much as digits as its factorization.

2143515313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 28.

The square root of 2143515313 is about 46298.1134928844. The cubic root of 2143515313 is about 1289.3639700560.

Adding to 2143515313 its reverse (3135153412), we get a palindrome (5278668725).

The spelling of 2143515313 in words is "two billion, one hundred forty-three million, five hundred fifteen thousand, three hundred thirteen".