4138731 has 12 divisors (see below), whose sum is σ = 6054880. Its totient is φ = 2723760.

The previous prime is 4138723. The next prime is 4138741. The reversal of 4138731 is 1378314.

It is not a de Polignac number, because 4138731 - 2³ = 4138723 is a prime.

It is a super-2 number, since 2×4138731² = 34258188580722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4138695 and 4138704.

It is not an unprimeable number, because it can be changed into a prime (4138711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2200 + ... + 3621.

Almost surely, 2^4138731 is an apocalyptic number.

4138731 is a deficient number, since it is larger than the sum of its proper divisors (1916149).

4138731 is a wasteful number, since it uses less digits than its factorization.

4138731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5906 (or 5903 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 4138731 is about 2034.3871313002. The cubic root of 4138731 is about 160.5544695317.

The spelling of 4138731 in words is "four million, one hundred thirty-eight thousand, seven hundred thirty-one".