31114189 has 2 divisors, whose sum is σ = 31114190. Its totient is φ = 31114188.

The previous prime is 31114163. The next prime is 31114249. The reversal of 31114189 is 98141113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27910089 + 3204100 = 5283^2 + 1790^2 .

It is a cyclic number.

It is not a de Polignac number, because 31114189 - 2⁵ = 31114157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31114289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15557094 + 15557095.

It is an arithmetic number, because the mean of its divisors is an integer number (15557095).

Almost surely, 2^31114189 is an apocalyptic number.

It is an amenable number.

31114189 is a deficient number, since it is larger than the sum of its proper divisors (1).

31114189 is an equidigital number, since it uses as much as digits as its factorization.

31114189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 28.

The square root of 31114189 is about 5578.0094119677. The cubic root of 31114189 is about 314.5233034919.

The spelling of 31114189 in words is "thirty-one million, one hundred fourteen thousand, one hundred eighty-nine".