2231489 has 4 divisors (see below), whose sum is σ = 2403156. Its totient is φ = 2059824.

The previous prime is 2231479. The next prime is 2231491. The reversal of 2231489 is 9841322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 693889 + 1537600 = 833^2 + 1240^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2231489 is a prime.

It is a super-3 number, since 3×2231489³ = 33335387340422349507, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2231429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85814 + ... + 85839.

It is an arithmetic number, because the mean of its divisors is an integer number (600789).

2^2231489 is an apocalyptic number.

It is an amenable number.

2231489 is a deficient number, since it is larger than the sum of its proper divisors (171667).

2231489 is a wasteful number, since it uses less digits than its factorization.

2231489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171666.

The product of its digits is 3456, while the sum is 29.

The square root of 2231489 is about 1493.8169231870. The cubic root of 2231489 is about 130.6767275272.

The spelling of 2231489 in words is "two million, two hundred thirty-one thousand, four hundred eighty-nine".