105831399 has 8 divisors (see below), whose sum is σ = 141214320. Its totient is φ = 70501376.

The previous prime is 105831379. The next prime is 105831437. The reversal of 105831399 is 993138501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 105831399 - 2¹² = 105827303 is a prime.

It is a super-2 number, since 2×105831399² = 22400570028594402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105831379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8292 + ... + 16745.

It is an arithmetic number, because the mean of its divisors is an integer number (17651790).

Almost surely, 2^105831399 is an apocalyptic number.

105831399 is a deficient number, since it is larger than the sum of its proper divisors (35382921).

105831399 is a wasteful number, since it uses less digits than its factorization.

105831399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26449.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 105831399 is about 10287.4388941077. The cubic root of 105831399 is about 473.0112961350.

The spelling of 105831399 in words is "one hundred five million, eight hundred thirty-one thousand, three hundred ninety-nine".