2278331 has 4 divisors (see below), whose sum is σ = 2485464. Its totient is φ = 2071200.

The previous prime is 2278313. The next prime is 2278343. The reversal of 2278331 is 1338722.

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 2278331 - 2¹⁰ = 2277307 is a prime.

It is a super-2 number, since 2×2278331² = 10381584291122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2278331.

It is not an unprimeable number, because it can be changed into a prime (2278301) 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, 103550 + ... + 103571.

It is an arithmetic number, because the mean of its divisors is an integer number (621366).

2^2278331 is an apocalyptic number.

2278331 is a deficient number, since it is larger than the sum of its proper divisors (207133).

2278331 is a wasteful number, since it uses less digits than its factorization.

2278331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207132.

The product of its digits is 2016, while the sum is 26.

The square root of 2278331 is about 1509.4141247517. The cubic root of 2278331 is about 131.5847641751.

It can be divided in two parts, 227 and 8331, that added together give a palindrome (8558).

The spelling of 2278331 in words is "two million, two hundred seventy-eight thousand, three hundred thirty-one".