4243431 has 16 divisors (see below), whose sum is σ = 5978880. Its totient is φ = 2671680.

The previous prime is 4243429. The next prime is 4243433. The reversal of 4243431 is 1343424.

It is an interprime number because it is at equal distance from previous prime (4243429) and next prime (4243433).

It is not a de Polignac number, because 4243431 - 2¹ = 4243429 is a prime.

It is a super-2 number, since 2×4243431² = 36013413303522, which contains 22 as substring.

It is a d-powerful number, because it can be written as 4³ + 2¹¹ + 4⁶ + 3¹³ + 4¹⁰ + 3¹³ + 1 .

It is a junction number, because it is equal to n+sod(n) for n = 4243398 and 4243407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4243433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5796 + ... + 6486.

It is an arithmetic number, because the mean of its divisors is an integer number (373680).

Almost surely, 2^4243431 is an apocalyptic number.

4243431 is a deficient number, since it is larger than the sum of its proper divisors (1735449).

4243431 is a wasteful number, since it uses less digits than its factorization.

4243431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806.

The product of its digits is 1152, while the sum is 21.

The square root of 4243431 is about 2059.9589801741. The cubic root of 4243431 is about 161.8970920887.

Adding to 4243431 its reverse (1343424), we get a palindrome (5586855).

The spelling of 4243431 in words is "four million, two hundred forty-three thousand, four hundred thirty-one".