2278231 has 4 divisors (see below), whose sum is σ = 2326752. Its totient is φ = 2229712.

The previous prime is 2278229. The next prime is 2278249. The reversal of 2278231 is 1328722.

2278231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2278231 - 2¹ = 2278229 is a prime.

It is a super-2 number, since 2×2278231² = 10380672978722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2278196 and 2278205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24190 + ... + 24283.

It is an arithmetic number, because the mean of its divisors is an integer number (581688).

2^2278231 is an apocalyptic number.

2278231 is a deficient number, since it is larger than the sum of its proper divisors (48521).

2278231 is an equidigital number, since it uses as much as digits as its factorization.

2278231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48520.

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

The square root of 2278231 is about 1509.3809989529. The cubic root of 2278231 is about 131.5828389838.

The spelling of 2278231 in words is "two million, two hundred seventy-eight thousand, two hundred thirty-one".