105831906 has 32 divisors (see below), whose sum is σ = 217740096. Its totient is φ = 34272000.

The previous prime is 105831857. The next prime is 105831907. The reversal of 105831906 is 609138501.

It is a super-2 number, since 2×105831906² = 22400784655185672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105831907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68361 + ... + 69891.

It is an arithmetic number, because the mean of its divisors is an integer number (6804378).

Almost surely, 2^105831906 is an apocalyptic number.

105831906 is an abundant number, since it is smaller than the sum of its proper divisors (111908190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105831906 is a wasteful number, since it uses less digits than its factorization.

105831906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 105831906 is about 10287.4635357798. The cubic root of 105831906 is about 473.0120514758.

The spelling of 105831906 in words is "one hundred five million, eight hundred thirty-one thousand, nine hundred six".