4222731 has 16 divisors (see below), whose sum is σ = 6186240. Its totient is φ = 2550240.

The previous prime is 4222723. The next prime is 4222739. The reversal of 4222731 is 1372224.

It is an interprime number because it is at equal distance from previous prime (4222723) and next prime (4222739).

It is not a de Polignac number, because 4222731 - 2³ = 4222723 is a prime.

It is a super-2 number, since 2×4222731² = 35662914196722, which contains 22 as substring.

It is a d-powerful number, because it can be written as 4¹¹ + 2⁵ + 2⁹ + 2¹³ + 7 + 3⁹ + 1 .

4222731 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4222698 and 4222707.

It is not an unprimeable number, because it can be changed into a prime (4222739) 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, 300 + ... + 2921.

It is an arithmetic number, because the mean of its divisors is an integer number (386640).

Almost surely, 2^4222731 is an apocalyptic number.

4222731 is a deficient number, since it is larger than the sum of its proper divisors (1963509).

4222731 is a wasteful number, since it uses less digits than its factorization.

4222731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3266.

The product of its digits is 672, while the sum is 21.

The square root of 4222731 is about 2054.9284659082. The cubic root of 4222731 is about 161.6334112819.

Adding to 4222731 its reverse (1372224), we get a palindrome (5594955).

The spelling of 4222731 in words is "four million, two hundred twenty-two thousand, seven hundred thirty-one".