106931191 has 4 divisors (see below), whose sum is σ = 107649000. Its totient is φ = 106213384.

The previous prime is 106931179. The next prime is 106931197. The reversal of 106931191 is 191139601.

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

It is a cyclic number.

It is not a de Polignac number, because 106931191 - 2¹⁷ = 106800119 is a prime.

It is a super-2 number, since 2×106931191² = 22868559217356962, 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 (106931197) 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 in 3 ways as a sum of consecutive naturals, for example, 358681 + ... + 358978.

It is an arithmetic number, because the mean of its divisors is an integer number (26912250).

Almost surely, 2^106931191 is an apocalyptic number.

106931191 is a deficient number, since it is larger than the sum of its proper divisors (717809).

106931191 is an equidigital number, since it uses as much as digits as its factorization.

106931191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717808.

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 106931191 is about 10340.7538893448. The cubic root of 106931191 is about 474.6441523188.

The spelling of 106931191 in words is "one hundred six million, nine hundred thirty-one thousand, one hundred ninety-one".