10531863 has 14 divisors (see below), whose sum is σ = 15791664. Its totient is φ = 7020756.

The previous prime is 10531849. The next prime is 10531867. The reversal of 10531863 is 36813501.

It is not a de Polignac number, because 10531863 - 2⁵ = 10531831 is a prime.

It is a super-2 number, since 2×10531863² = 221840276501538, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10531867) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 6495 + ... + 7952.

It is an arithmetic number, because the mean of its divisors is an integer number (1127976).

Almost surely, 2^10531863 is an apocalyptic number.

10531863 is a deficient number, since it is larger than the sum of its proper divisors (5259801).

10531863 is an frugal number, since it uses more digits than its factorization.

10531863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14465 (or 14450 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 10531863 is about 3245.2831925735. The cubic root of 10531863 is about 219.1972327137.

It can be divided in two parts, 1053 and 1863, that added together give a square (2916 = 54²).

The spelling of 10531863 in words is "ten million, five hundred thirty-one thousand, eight hundred sixty-three".