2216031 has 4 divisors (see below), whose sum is σ = 2954712. Its totient is φ = 1477352.

The previous prime is 2216021. The next prime is 2216047. The reversal of 2216031 is 1306122.

2216031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2216031 - 2⁵ = 2215999 is a prime.

It is a super-2 number, since 2×2216031² = 9821586785922, which contains 22 as substring.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 2216031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216021) 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, 369336 + ... + 369341.

It is an arithmetic number, because the mean of its divisors is an integer number (738678).

2^2216031 is an apocalyptic number.

2216031 is a deficient number, since it is larger than the sum of its proper divisors (738681).

2216031 is an equidigital number, since it uses as much as digits as its factorization.

2216031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738680.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2216031 is about 1488.6339375414. The cubic root of 2216031 is about 130.3742862405.

Subtracting from 2216031 its reverse (1306122), we obtain a palindrome (909909).

The spelling of 2216031 in words is "two million, two hundred sixteen thousand, thirty-one".