28311119 has 2 divisors, whose sum is σ = 28311120. Its totient is φ = 28311118.

The previous prime is 28311113. The next prime is 28311149. The reversal of 28311119 is 91111382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28311119 - 2¹⁶ = 28245583 is a prime.

It is a super-2 number, since 2×28311119² = 1603038918064322, 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 (28311113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14155559 + 14155560.

It is an arithmetic number, because the mean of its divisors is an integer number (14155560).

Almost surely, 2^28311119 is an apocalyptic number.

28311119 is a deficient number, since it is larger than the sum of its proper divisors (1).

28311119 is an equidigital number, since it uses as much as digits as its factorization.

28311119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 26.

The square root of 28311119 is about 5320.8193917854. The cubic root of 28311119 is about 304.7794481852.

The spelling of 28311119 in words is "twenty-eight million, three hundred eleven thousand, one hundred nineteen".