31110089 has 2 divisors, whose sum is σ = 31110090. Its totient is φ = 31110088.

The previous prime is 31110067. The next prime is 31110091. The reversal of 31110089 is 98001113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23863225 + 7246864 = 4885^2 + 2692^2 .

It is a cyclic number.

It is not a de Polignac number, because 31110089 - 2¹⁶ = 31044553 is a prime.

Together with 31110091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31110029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15555044 + 15555045.

It is an arithmetic number, because the mean of its divisors is an integer number (15555045).

Almost surely, 2^31110089 is an apocalyptic number.

It is an amenable number.

31110089 is a deficient number, since it is larger than the sum of its proper divisors (1).

31110089 is an equidigital number, since it uses as much as digits as its factorization.

31110089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 31110089 is about 5577.6418852415. The cubic root of 31110089 is about 314.5094876924.

The spelling of 31110089 in words is "thirty-one million, one hundred ten thousand, eighty-nine".