105447031 has 4 divisors (see below), whose sum is σ = 105577864. Its totient is φ = 105316200.

The previous prime is 105447029. The next prime is 105447037. The reversal of 105447031 is 130744501.

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 105447031 - 2¹ = 105447029 is a prime.

It is a super-2 number, since 2×105447031² = 22238152693429922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105446987 and 105447005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105447037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64200 + ... + 65821.

It is an arithmetic number, because the mean of its divisors is an integer number (26394466).

Almost surely, 2^105447031 is an apocalyptic number.

105447031 is a deficient number, since it is larger than the sum of its proper divisors (130833).

105447031 is an equidigital number, since it uses as much as digits as its factorization.

105447031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130832.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 105447031 is about 10268.7404777801. The cubic root of 105447031 is about 472.4379598097.

It can be divided in two parts, 1054470 and 31, that added together give a palindrome (1054501).

The spelling of 105447031 in words is "one hundred five million, four hundred forty-seven thousand, thirty-one".