2219631 has 16 divisors (see below), whose sum is σ = 3164160. Its totient is φ = 1380960.

The previous prime is 2219629. The next prime is 2219641. The reversal of 2219631 is 1369122.

It is not a de Polignac number, because 2219631 - 2¹ = 2219629 is a prime.

It is a super-2 number, since 2×2219631² = 9853523552322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2219621) 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, 2286 + ... + 3108.

It is an arithmetic number, because the mean of its divisors is an integer number (197760).

2^2219631 is an apocalyptic number.

2219631 is a deficient number, since it is larger than the sum of its proper divisors (944529).

2219631 is a wasteful number, since it uses less digits than its factorization.

2219631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886.

The product of its digits is 648, while the sum is 24.

The square root of 2219631 is about 1489.8426091370. The cubic root of 2219631 is about 130.4448468515. Note that the first 3 decimals are identical.

It can be divided in two parts, 2219 and 631, that added together give a triangular number (2850 = T₇₅).

The spelling of 2219631 in words is "two million, two hundred nineteen thousand, six hundred thirty-one".