105315812 has 12 divisors (see below), whose sum is σ = 210631680. Its totient is φ = 45135336.

The previous prime is 105315809. The next prime is 105315817. The reversal of 105315812 is 218513501.

It is a happy number.

105315812 is an admirable number.

It is a super-2 number, since 2×105315812² = 22182840514438688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105315817) 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, 1880612 + ... + 1880667.

It is an arithmetic number, because the mean of its divisors is an integer number (17552640).

Almost surely, 2^105315812 is an apocalyptic number.

It is an amenable number.

105315812 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

105315812 is a wasteful number, since it uses less digits than its factorization.

105315812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3761290 (or 3761288 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 105315812 is about 10262.3492437161. The cubic root of 105315812 is about 472.2419101324.

The spelling of 105315812 in words is "one hundred five million, three hundred fifteen thousand, eight hundred twelve".