4138313 has 4 divisors (see below), whose sum is σ = 4156308. Its totient is φ = 4120320.

The previous prime is 4138307. The next prime is 4138331. The reversal of 4138313 is 3138314.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3138314 = 2 ⋅1569157.

It can be written as a sum of positive squares in 2 ways, for example, as 1138489 + 2999824 = 1067^2 + 1732^2 .

It is a cyclic number.

It is not a de Polignac number, because 4138313 - 2⁶ = 4138249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4138373) 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, 8648 + ... + 9113.

It is an arithmetic number, because the mean of its divisors is an integer number (1039077).

Almost surely, 2^4138313 is an apocalyptic number.

It is an amenable number.

4138313 is a deficient number, since it is larger than the sum of its proper divisors (17995).

4138313 is a wasteful number, since it uses less digits than its factorization.

4138313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17994.

The product of its digits is 864, while the sum is 23.

The square root of 4138313 is about 2034.2843950638. The cubic root of 4138313 is about 160.5490641689.

Subtracting from 4138313 its reverse (3138314), we obtain a palindrome (999999).

The spelling of 4138313 in words is "four million, one hundred thirty-eight thousand, three hundred thirteen".