105231085 has 4 divisors (see below), whose sum is σ = 126277308. Its totient is φ = 84184864.

The previous prime is 105231079. The next prime is 105231109. The reversal of 105231085 is 580132501.

It is a happy number.

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 61168041 + 44063044 = 7821^2 + 6638^2 .

It is a cyclic number.

It is not a de Polignac number, because 105231085 - 2²⁵ = 71676653 is a prime.

It is a super-2 number, since 2×105231085² = 22147162500554450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10523104 + ... + 10523113.

It is an arithmetic number, because the mean of its divisors is an integer number (31569327).

Almost surely, 2^105231085 is an apocalyptic number.

It is an amenable number.

105231085 is a deficient number, since it is larger than the sum of its proper divisors (21046223).

105231085 is an equidigital number, since it uses as much as digits as its factorization.

105231085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21046222.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 105231085 is about 10258.2203622266. The cubic root of 105231085 is about 472.1152359759.

Adding to 105231085 its reverse (580132501), we get a palindrome (685363586).

The spelling of 105231085 in words is "one hundred five million, two hundred thirty-one thousand, eighty-five".