106109391 has 4 divisors (see below), whose sum is σ = 141479192. Its totient is φ = 70739592.

The previous prime is 106109383. The next prime is 106109413. The reversal of 106109391 is 193901601.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 106109391 - 2³ = 106109383 is a prime.

It is a super-2 number, since 2×106109391² = 22518405716781762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106109321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17684896 + ... + 17684901.

It is an arithmetic number, because the mean of its divisors is an integer number (35369798).

Almost surely, 2^106109391 is an apocalyptic number.

106109391 is a deficient number, since it is larger than the sum of its proper divisors (35369801).

106109391 is an equidigital number, since it uses as much as digits as its factorization.

106109391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35369800.

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 106109391 is about 10300.9412676706. The cubic root of 106109391 is about 473.4250939053.

The spelling of 106109391 in words is "one hundred six million, one hundred nine thousand, three hundred ninety-one".