105331231 has 4 divisors (see below), whose sum is σ = 110875000. Its totient is φ = 99787464.

The previous prime is 105331207. The next prime is 105331241. The reversal of 105331231 is 132133501.

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

It is a cyclic number.

It is not a de Polignac number, because 105331231 - 2¹¹ = 105329183 is a prime.

It is a super-2 number, since 2×105331231² = 22189336447950722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 5543749 = 105331231 / (1 + 0 + 5 + 3 + 3 + 1 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105331199 and 105331208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105331241) 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, 2771856 + ... + 2771893.

It is an arithmetic number, because the mean of its divisors is an integer number (27718750).

Almost surely, 2^105331231 is an apocalyptic number.

105331231 is a deficient number, since it is larger than the sum of its proper divisors (5543769).

105331231 is an equidigital number, since it uses as much as digits as its factorization.

105331231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5543768.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 105331231 is about 10263.1004574641. The cubic root of 105331231 is about 472.2649555566.

Adding to 105331231 its reverse (132133501), we get a palindrome (237464732).

The spelling of 105331231 in words is "one hundred five million, three hundred thirty-one thousand, two hundred thirty-one".