105197381 has 4 divisors (see below), whose sum is σ = 105778764. Its totient is φ = 104616000.

The previous prime is 105197369. The next prime is 105197383. The reversal of 105197381 is 183791501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 183791501 = 263 ⋅698827.

It can be written as a sum of positive squares in 2 ways, for example, as 8352100 + 96845281 = 2890^2 + 9841^2 .

It is a cyclic number.

It is not a de Polignac number, because 105197381 - 2¹⁴ = 105180997 is a prime.

It is a super-2 number, since 2×105197381² = 22132977938518322, 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 (105197383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290420 + ... + 290781.

It is an arithmetic number, because the mean of its divisors is an integer number (26444691).

Almost surely, 2^105197381 is an apocalyptic number.

It is an amenable number.

105197381 is a deficient number, since it is larger than the sum of its proper divisors (581383).

105197381 is an equidigital number, since it uses as much as digits as its factorization.

105197381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581382.

The product of its (nonzero) digits is 7560, while the sum is 35.

The square root of 105197381 is about 10256.5774505924. The cubic root of 105197381 is about 472.0648266916.

The spelling of 105197381 in words is "one hundred five million, one hundred ninety-seven thousand, three hundred eighty-one".