10531881 has 6 divisors (see below), whose sum is σ = 15212730. Its totient is φ = 7021248.

The previous prime is 10531877. The next prime is 10531883. The reversal of 10531881 is 18813501.

It can be written as a sum of positive squares in only one way, i.e., 10342656 + 189225 = 3216^2 + 435^2 .

It is not a de Polignac number, because 10531881 - 2² = 10531877 is a prime.

It is a super-2 number, since 2×10531881² = 221841034796322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10531883) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 585096 + ... + 585113.

It is an arithmetic number, because the mean of its divisors is an integer number (2535455).

Almost surely, 2^10531881 is an apocalyptic number.

It is an amenable number.

10531881 is a deficient number, since it is larger than the sum of its proper divisors (4680849).

10531881 is a wasteful number, since it uses less digits than its factorization.

10531881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170215 (or 1170212 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 10531881 is about 3245.2859658280. The cubic root of 10531881 is about 219.1973575902.

The spelling of 10531881 in words is "ten million, five hundred thirty-one thousand, eight hundred eighty-one".