4221031 has 2 divisors, whose sum is σ = 4221032. Its totient is φ = 4221030.

The previous prime is 4221011. The next prime is 4221047. The reversal of 4221031 is 1301224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4221031 - 2⁹ = 4220519 is a prime.

It is a super-2 number, since 2×4221031² = 35634205405922, which contains 22 as substring.

It is a Chen prime.

4221031 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4221011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110515 + 2110516.

It is an arithmetic number, because the mean of its divisors is an integer number (2110516).

Almost surely, 2^4221031 is an apocalyptic number.

4221031 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221031 is an equidigital number, since it uses as much as digits as its factorization.

4221031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 4221031 is about 2054.5147845659. The cubic root of 4221031 is about 161.6117180790.

Adding to 4221031 its reverse (1301224), we get a palindrome (5522255).

The spelling of 4221031 in words is "four million, two hundred twenty-one thousand, thirty-one".