2887231 has 4 divisors (see below), whose sum is σ = 2930392. Its totient is φ = 2844072.

The previous prime is 2887217. The next prime is 2887237. The reversal of 2887231 is 1327882.

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

It is a cyclic number.

It is not a de Polignac number, because 2887231 - 2¹³ = 2879039 is a prime.

It is a super-2 number, since 2×2887231² = 16672205694722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2887193 and 2887202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2887237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21480 + ... + 21613.

It is an arithmetic number, because the mean of its divisors is an integer number (732598).

2^2887231 is an apocalyptic number.

2887231 is a deficient number, since it is larger than the sum of its proper divisors (43161).

2887231 is an equidigital number, since it uses as much as digits as its factorization.

2887231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43160.

The product of its digits is 5376, while the sum is 31.

The square root of 2887231 is about 1699.1853930634. The cubic root of 2887231 is about 142.3947062534.

The spelling of 2887231 in words is "two million, eight hundred eighty-seven thousand, two hundred thirty-one".