31089119 has 2 divisors, whose sum is σ = 31089120. Its totient is φ = 31089118.

The previous prime is 31089109. The next prime is 31089143. The reversal of 31089119 is 91198013.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31089119 - 2¹⁶ = 31023583 is a prime.

It is a super-2 number, since 2×31089119² = 1933066640392322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31089109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15544559 + 15544560.

It is an arithmetic number, because the mean of its divisors is an integer number (15544560).

Almost surely, 2^31089119 is an apocalyptic number.

31089119 is a deficient number, since it is larger than the sum of its proper divisors (1).

31089119 is an equidigital number, since it uses as much as digits as its factorization.

31089119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 31089119 is about 5575.7617416816. The cubic root of 31089119 is about 314.4388059448.

The spelling of 31089119 in words is "thirty-one million, eighty-nine thousand, one hundred nineteen".