2218331 has 2 divisors, whose sum is σ = 2218332. Its totient is φ = 2218330.

The previous prime is 2218319. The next prime is 2218339. The reversal of 2218331 is 1338122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2218331 is a prime.

It is a super-2 number, since 2×2218331² = 9841984851122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2218339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109165 + 1109166.

It is an arithmetic number, because the mean of its divisors is an integer number (1109166).

2^2218331 is an apocalyptic number.

2218331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218331 is an equidigital number, since it uses as much as digits as its factorization.

2218331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 20.

The square root of 2218331 is about 1489.4062575402. The cubic root of 2218331 is about 130.4193754378.

The spelling of 2218331 in words is "two million, two hundred eighteen thousand, three hundred thirty-one".