2231171 has 2 divisors, whose sum is σ = 2231172. Its totient is φ = 2231170.

The previous prime is 2231149. The next prime is 2231209. The reversal of 2231171 is 1711322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2231171 - 2⁶ = 2231107 is a prime.

It is a super-3 number, since 3×2231171³ = 33321137918724039633, which contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2231371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115585 + 1115586.

It is an arithmetic number, because the mean of its divisors is an integer number (1115586).

2^2231171 is an apocalyptic number.

2231171 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231171 is an equidigital number, since it uses as much as digits as its factorization.

2231171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84, while the sum is 17.

The square root of 2231171 is about 1493.7104806488. The cubic root of 2231171 is about 130.6705198376.

Adding to 2231171 its reverse (1711322), we get a palindrome (3942493).

It can be divided in two parts, 2231 and 171, that multiplied together give a triangular number (381501 = T₈₇₃).

The spelling of 2231171 in words is "two million, two hundred thirty-one thousand, one hundred seventy-one".