106309891 has 8 divisors (see below), whose sum is σ = 114688224. Its totient is φ = 98167680.

The previous prime is 106309871. The next prime is 106309897. The reversal of 106309891 is 198903601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 106309891 - 2⁵ = 106309859 is a prime.

It is a super-2 number, since 2×106309891² = 22603585848863762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 106309891.

It is not an unprimeable number, because it can be changed into a prime (106309897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58095 + ... + 59896.

It is an arithmetic number, because the mean of its divisors is an integer number (14336028).

Almost surely, 2^106309891 is an apocalyptic number.

106309891 is a deficient number, since it is larger than the sum of its proper divisors (8378333).

106309891 is a wasteful number, since it uses less digits than its factorization.

106309891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118061.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 106309891 is about 10310.6687949909. The cubic root of 106309891 is about 473.7230945704.

The spelling of 106309891 in words is "one hundred six million, three hundred nine thousand, eight hundred ninety-one".