2140021313 has 4 divisors (see below), whose sum is σ = 2153652180. Its totient is φ = 2126390448.

The previous prime is 2140021297. The next prime is 2140021327. The reversal of 2140021313 is 3131200412.

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 1141966849 + 998054464 = 33793^2 + 31592^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140021313 - 2⁴ = 2140021297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2140021291 and 2140021300.

It is not an unprimeable number, because it can be changed into a prime (2140021613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6815198 + ... + 6815511.

It is an arithmetic number, because the mean of its divisors is an integer number (538413045).

Almost surely, 2^2140021313 is an apocalyptic number.

It is an amenable number.

2140021313 is a deficient number, since it is larger than the sum of its proper divisors (13630867).

2140021313 is a wasteful number, since it uses less digits than its factorization.

2140021313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13630866.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2140021313 is about 46260.3643846436. The cubic root of 2140021313 is about 1288.6630205939.

Adding to 2140021313 its reverse (3131200412), we get a palindrome (5271221725).

The spelling of 2140021313 in words is "two billion, one hundred forty million, twenty-one thousand, three hundred thirteen".