105443531 has 4 divisors (see below), whose sum is σ = 105607152. Its totient is φ = 105279912.

The previous prime is 105443519. The next prime is 105443579. The reversal of 105443531 is 135344501.

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 105443531 - 2⁶ = 105443467 is a prime.

It is a super-2 number, since 2×105443531² = 22236676459495922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105443531.

It is not an unprimeable number, because it can be changed into a prime (105443501) 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, 80840 + ... + 82133.

It is an arithmetic number, because the mean of its divisors is an integer number (26401788).

Almost surely, 2^105443531 is an apocalyptic number.

105443531 is a deficient number, since it is larger than the sum of its proper divisors (163621).

105443531 is an equidigital number, since it uses as much as digits as its factorization.

105443531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163620.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 105443531 is about 10268.5700562444. The cubic root of 105443531 is about 472.4327326951.

The spelling of 105443531 in words is "one hundred five million, four hundred forty-three thousand, five hundred thirty-one".