109287235 has 4 divisors (see below), whose sum is σ = 131144688. Its totient is φ = 87429784.

The previous prime is 109287163. The next prime is 109287287. The reversal of 109287235 is 532782901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 532782901 = 7 ⋅76111843.

It is a cyclic number.

It is not a de Polignac number, because 109287235 - 2¹⁷ = 109156163 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109287194 and 109287203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10928719 + ... + 10928728.

It is an arithmetic number, because the mean of its divisors is an integer number (32786172).

Almost surely, 2^109287235 is an apocalyptic number.

109287235 is a deficient number, since it is larger than the sum of its proper divisors (21857453).

109287235 is an equidigital number, since it uses as much as digits as its factorization.

109287235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21857452.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 109287235 is about 10454.0535200467. The cubic root of 109287235 is about 478.1048464884.

The spelling of 109287235 in words is "one hundred nine million, two hundred eighty-seven thousand, two hundred thirty-five".