4243731 has 4 divisors (see below), whose sum is σ = 5658312. Its totient is φ = 2829152.

The previous prime is 4243721. The next prime is 4243747. The reversal of 4243731 is 1373424.

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 4243731 - 2⁵ = 4243699 is a prime.

It is a super-2 number, since 2×4243731² = 36018505600722, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (4243711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707286 + ... + 707291.

It is an arithmetic number, because the mean of its divisors is an integer number (1414578).

Almost surely, 2^4243731 is an apocalyptic number.

4243731 is a deficient number, since it is larger than the sum of its proper divisors (1414581).

4243731 is a wasteful number, since it uses less digits than its factorization.

4243731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414580.

The product of its digits is 2016, while the sum is 24.

The square root of 4243731 is about 2060.0317958711. The cubic root of 4243731 is about 161.9009072392.

The spelling of 4243731 in words is "four million, two hundred forty-three thousand, seven hundred thirty-one".