4220031 has 4 divisors (see below), whose sum is σ = 5626712. Its totient is φ = 2813352.

The previous prime is 4219991. The next prime is 4220039. The reversal of 4220031 is 1300224.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4220031 - 2⁶ = 4219967 is a prime.

It is a super-2 number, since 2×4220031² = 35617323281922, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4219989 and 4220016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4220039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 703336 + ... + 703341.

It is an arithmetic number, because the mean of its divisors is an integer number (1406678).

Almost surely, 2^4220031 is an apocalyptic number.

4220031 is a deficient number, since it is larger than the sum of its proper divisors (1406681).

4220031 is a wasteful number, since it uses less digits than its factorization.

4220031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406680.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 4220031 is about 2054.2714036855. The cubic root of 4220031 is about 161.5989546505.

Adding to 4220031 its reverse (1300224), we get a palindrome (5520255).

The spelling of 4220031 in words is "four million, two hundred twenty thousand, thirty-one".