2021313 has 16 divisors (see below), whose sum is σ = 3113856. Its totient is φ = 1142400.

The previous prime is 2021291. The next prime is 2021321. The reversal of 2021313 is 3131202.

It is a happy number.

It is not a de Polignac number, because 2021313 - 2¹² = 2017217 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2021333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1645 + ... + 2597.

It is an arithmetic number, because the mean of its divisors is an integer number (194616).

2^2021313 is an apocalyptic number.

It is an amenable number.

2021313 is a deficient number, since it is larger than the sum of its proper divisors (1092543).

2021313 is a wasteful number, since it uses less digits than its factorization.

2021313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 2021313 is about 1421.7288771070. The cubic root of 2021313 is about 126.4380695363.

Adding to 2021313 its reverse (3131202), we get a palindrome (5152515).

The spelling of 2021313 in words is "two million, twenty-one thousand, three hundred thirteen".