2231287 has 8 divisors (see below), whose sum is σ = 2322432. Its totient is φ = 2141400.

The previous prime is 2231279. The next prime is 2231293. The reversal of 2231287 is 7821322.

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 2231287 - 2³ = 2231279 is a prime.

It is a super-3 number, since 3×2231287³ = 33326335350421070709, which contains 333 as substring.

It is a d-powerful number, because it can be written as 2² + 2⁴ + 3⁴ + 1 + 2¹⁴ + 8⁷ + 7⁶ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4962 + ... + 5392.

It is an arithmetic number, because the mean of its divisors is an integer number (290304).

2^2231287 is an apocalyptic number.

2231287 is a deficient number, since it is larger than the sum of its proper divisors (91145).

2231287 is a wasteful number, since it uses less digits than its factorization.

2231287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629.

The product of its digits is 1344, while the sum is 25.

The square root of 2231287 is about 1493.7493096233. The cubic root of 2231287 is about 130.6727843461.

The spelling of 2231287 in words is "two million, two hundred thirty-one thousand, two hundred eighty-seven".