4030021313 has 4 divisors (see below), whose sum is σ = 4031064660. Its totient is φ = 4028977968.

The previous prime is 4030021253. The next prime is 4030021319. The reversal of 4030021313 is 3131200304.

It is a happy number.

4030021313 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 809231809 + 3220789504 = 28447^2 + 56752^2 .

It is a cyclic number.

It is not a de Polignac number, because 4030021313 - 2⁸ = 4030021057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4030021291 and 4030021300.

It is not an unprimeable number, because it can be changed into a prime (4030021319) 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, 515858 + ... + 523611.

It is an arithmetic number, because the mean of its divisors is an integer number (1007766165).

Almost surely, 2^4030021313 is an apocalyptic number.

It is an amenable number.

4030021313 is a deficient number, since it is larger than the sum of its proper divisors (1043347).

4030021313 is a wasteful number, since it uses less digits than its factorization.

4030021313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043346.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 4030021313 is about 63482.4488579324. The cubic root of 4030021313 is about 1591.3624798169.

Adding to 4030021313 its reverse (3131200304), we get a palindrome (7161221617).

The spelling of 4030021313 in words is "four billion, thirty million, twenty-one thousand, three hundred thirteen".