105812317 has 4 divisors (see below), whose sum is σ = 113951740. Its totient is φ = 97672896.

The previous prime is 105812309. The next prime is 105812323. The reversal of 105812317 is 713218501.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22382361 + 83429956 = 4731^2 + 9134^2 .

It is a cyclic number.

It is not a de Polignac number, because 105812317 - 2³ = 105812309 is a prime.

It is a super-2 number, since 2×105812317² = 22392492857816978, 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 (105812017) 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, 4069692 + ... + 4069717.

It is an arithmetic number, because the mean of its divisors is an integer number (28487935).

Almost surely, 2^105812317 is an apocalyptic number.

It is an amenable number.

105812317 is a deficient number, since it is larger than the sum of its proper divisors (8139423).

105812317 is an equidigital number, since it uses as much as digits as its factorization.

105812317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8139422.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 105812317 is about 10286.5114105804. The cubic root of 105812317 is about 472.9828655552.

The spelling of 105812317 in words is "one hundred five million, eight hundred twelve thousand, three hundred seventeen".