2219531 has 8 divisors (see below), whose sum is σ = 2306304. Its totient is φ = 2134440.

The previous prime is 2219527. The next prime is 2219543. The reversal of 2219531 is 1359122.

2219531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2219531 - 2² = 2219527 is a prime.

It is a super-2 number, since 2×2219531² = 9852635719922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2219497 and 2219506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2219551) 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 7 ways as a sum of consecutive naturals, for example, 2690 + ... + 3416.

It is an arithmetic number, because the mean of its divisors is an integer number (288288).

2^2219531 is an apocalyptic number.

2219531 is a deficient number, since it is larger than the sum of its proper divisors (86773).

2219531 is an equidigital number, since it uses as much as digits as its factorization.

2219531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841.

The product of its digits is 540, while the sum is 23.

The square root of 2219531 is about 1489.8090481669. The cubic root of 2219531 is about 130.4428878651.

The spelling of 2219531 in words is "two million, two hundred nineteen thousand, five hundred thirty-one".