10531691 has 4 divisors (see below), whose sum is σ = 10565232. Its totient is φ = 10498152.

The previous prime is 10531679. The next prime is 10531693. The reversal of 10531691 is 19613501.

10531691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10531691 - 2⁶ = 10531627 is a prime.

It is a super-2 number, since 2×10531691² = 221833030638962, 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 10531691.

It is not an unprimeable number, because it can be changed into a prime (10531693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16295 + ... + 16928.

It is an arithmetic number, because the mean of its divisors is an integer number (2641308).

Almost surely, 2^10531691 is an apocalyptic number.

10531691 is a deficient number, since it is larger than the sum of its proper divisors (33541).

10531691 is an equidigital number, since it uses as much as digits as its factorization.

10531691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33540.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 10531691 is about 3245.2566924667. The cubic root of 10531691 is about 219.1960394417.

It can be divided in two parts, 1053 and 1691, that added together give a cube (2744 = 14³).

The spelling of 10531691 in words is "ten million, five hundred thirty-one thousand, six hundred ninety-one".