10805531 has 4 divisors (see below), whose sum is σ = 11787864. Its totient is φ = 9823200.

The previous prime is 10805507. The next prime is 10805539. The reversal of 10805531 is 13550801.

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 10805531 - 2⁶ = 10805467 is a prime.

It is a super-2 number, since 2×10805531² = 233519000383922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10805497 and 10805506.

It is not an unprimeable number, because it can be changed into a prime (10805539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491150 + ... + 491171.

It is an arithmetic number, because the mean of its divisors is an integer number (2946966).

Almost surely, 2^10805531 is an apocalyptic number.

10805531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10805531 is a deficient number, since it is larger than the sum of its proper divisors (982333).

10805531 is an equidigital number, since it uses as much as digits as its factorization.

10805531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982332.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 10805531 is about 3287.1767521689. The cubic root of 10805531 is about 221.0796175124.

The spelling of 10805531 in words is "ten million, eight hundred five thousand, five hundred thirty-one".