2231889 has 16 divisors (see below), whose sum is σ = 3317760. Its totient is φ = 1322960.

The previous prime is 2231881. The next prime is 2231891. The reversal of 2231889 is 9881322.

It is a cyclic number.

It is not a de Polignac number, because 2231889 - 2³ = 2231881 is a prime.

It is a super-3 number, since 3×2231889³ = 33353316909324145107, which contains 333 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2231881) 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, 832 + ... + 2270.

It is an arithmetic number, because the mean of its divisors is an integer number (207360).

2^2231889 is an apocalyptic number.

It is an amenable number.

2231889 is a deficient number, since it is larger than the sum of its proper divisors (1085871).

2231889 is a wasteful number, since it uses less digits than its factorization.

2231889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500.

The product of its digits is 6912, while the sum is 33.

The square root of 2231889 is about 1493.9508024028. The cubic root of 2231889 is about 130.6845351044.

It can be divided in two parts, 223 and 1889, that added together give a palindrome (2112).

The spelling of 2231889 in words is "two million, two hundred thirty-one thousand, eight hundred eighty-nine".