4138231 has 4 divisors (see below), whose sum is σ = 4178512. Its totient is φ = 4097952.

The previous prime is 4138223. The next prime is 4138241. The reversal of 4138231 is 1328314.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4138231 - 2³ = 4138223 is a prime.

It is a super-2 number, since 2×4138231² = 34249911618722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4138241) 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, 19986 + ... + 20191.

It is an arithmetic number, because the mean of its divisors is an integer number (1044628).

Almost surely, 2^4138231 is an apocalyptic number.

4138231 is a deficient number, since it is larger than the sum of its proper divisors (40281).

4138231 is a wasteful number, since it uses less digits than its factorization.

4138231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40280.

The product of its digits is 576, while the sum is 22.

The square root of 4138231 is about 2034.2642404565. The cubic root of 4138231 is about 160.5480037440.

The spelling of 4138231 in words is "four million, one hundred thirty-eight thousand, two hundred thirty-one".