4021313 has 4 divisors (see below), whose sum is σ = 4032468. Its totient is φ = 4010160.

The previous prime is 4021309. The next prime is 4021349. The reversal of 4021313 is 3131204.

4021313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1658944 + 2362369 = 1288^2 + 1537^2 .

It is a cyclic number.

It is not a de Polignac number, because 4021313 - 2² = 4021309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4021013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5018 + ... + 5763.

It is an arithmetic number, because the mean of its divisors is an integer number (1008117).

Almost surely, 2^4021313 is an apocalyptic number.

It is an amenable number.

4021313 is a deficient number, since it is larger than the sum of its proper divisors (11155).

4021313 is a wasteful number, since it uses less digits than its factorization.

4021313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11154.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 4021313 is about 2005.3211712840. The cubic root of 4021313 is about 159.0215415878.

Adding to 4021313 its reverse (3131204), we get a palindrome (7152517).

It can be divided in two parts, 4021 and 313, that added together give a palindrome (4334).

The spelling of 4021313 in words is "four million, twenty-one thousand, three hundred thirteen".