2223631 has 2 divisors, whose sum is σ = 2223632. Its totient is φ = 2223630.

The previous prime is 2223623. The next prime is 2223671. The reversal of 2223631 is 1363222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2223631 - 2³ = 2223623 is a prime.

It is a super-2 number, since 2×2223631² = 9889069648322, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2³ + 2⁵ + 2¹⁹ + 3 + 6⁸ + 3⁹ + 1 .

It is a junction number, because it is equal to n+sod(n) for n = 2223599 and 2223608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2223671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111815 + 1111816.

It is an arithmetic number, because the mean of its divisors is an integer number (1111816).

2^2223631 is an apocalyptic number.

2223631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2223631 is an equidigital number, since it uses as much as digits as its factorization.

2223631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 19.

The square root of 2223631 is about 1491.1844285668. The cubic root of 2223631 is about 130.5231581064.

Adding to 2223631 its reverse (1363222), we get a palindrome (3586853).

It can be divided in two parts, 22 and 23631, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 2223631 in words is "two million, two hundred twenty-three thousand, six hundred thirty-one".