1105005531 has 16 divisors (see below), whose sum is σ = 1741881600. Its totient is φ = 609657888.

The previous prime is 1105005487. The next prime is 1105005541. The reversal of 1105005531 is 1355005011.

It is not a de Polignac number, because 1105005531 - 2⁹ = 1105005019 is a prime.

It is a super-2 number, since 2×1105005531² = 2442074447081183922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1105005498 and 1105005507.

It is not an unprimeable number, because it can be changed into a prime (1105005541) 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 15 ways as a sum of consecutive naturals, for example, 906621 + ... + 907838.

It is an arithmetic number, because the mean of its divisors is an integer number (108867600).

Almost surely, 2^1105005531 is an apocalyptic number.

1105005531 is a deficient number, since it is larger than the sum of its proper divisors (636876069).

1105005531 is a wasteful number, since it uses less digits than its factorization.

1105005531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814498.

The product of its (nonzero) digits is 375, while the sum is 21.

The square root of 1105005531 is about 33241.6234711844. The cubic root of 1105005531 is about 1033.8435373526.

The spelling of 1105005531 in words is "one billion, one hundred five million, five thousand, five hundred thirty-one".