2831189 has 2 divisors, whose sum is σ = 2831190. Its totient is φ = 2831188.

The previous prime is 2831177. The next prime is 2831221. The reversal of 2831189 is 9811382.

It is an a-pointer prime, because the next prime (2831221) can be obtained adding 2831189 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1800964 + 1030225 = 1342^2 + 1015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2831189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2831089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1415594 + 1415595.

It is an arithmetic number, because the mean of its divisors is an integer number (1415595).

2^2831189 is an apocalyptic number.

It is an amenable number.

2831189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2831189 is an equidigital number, since it uses as much as digits as its factorization.

2831189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 32.

The square root of 2831189 is about 1682.6137405834. The cubic root of 2831189 is about 141.4673725169.

The spelling of 2831189 in words is "two million, eight hundred thirty-one thousand, one hundred eighty-nine".