106523809 has 4 divisors (see below), whose sum is σ = 121741504. Its totient is φ = 91306116.

The previous prime is 106523779. The next prime is 106523827. The reversal of 106523809 is 908325601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 908325601 = 173 ⋅5250437.

It is a cyclic number.

It is not a de Polignac number, because 106523809 - 2⁹ = 106523297 is a prime.

It is a super-2 number, since 2×106523809² = 22694643767736962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106523839) by changing a digit.

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, 7608837 + ... + 7608850.

It is an arithmetic number, because the mean of its divisors is an integer number (30435376).

Almost surely, 2^106523809 is an apocalyptic number.

It is an amenable number.

106523809 is a deficient number, since it is larger than the sum of its proper divisors (15217695).

106523809 is an equidigital number, since it uses as much as digits as its factorization.

106523809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15217694.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 106523809 is about 10321.0372056301. The cubic root of 106523809 is about 474.0406253939.

The spelling of 106523809 in words is "one hundred six million, five hundred twenty-three thousand, eight hundred nine".