10881181 has 4 divisors (see below), whose sum is σ = 10944252. Its totient is φ = 10818112.

The previous prime is 10881179. The next prime is 10881191. The reversal of 10881181 is 18118801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8732025 + 2149156 = 2955^2 + 1466^2 .

It is a cyclic number.

It is not a de Polignac number, because 10881181 - 2¹ = 10881179 is a prime.

It is a super-2 number, since 2×10881181² = 236800199909522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10881131) 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, 31276 + ... + 31621.

It is an arithmetic number, because the mean of its divisors is an integer number (2736063).

Almost surely, 2^10881181 is an apocalyptic number.

It is an amenable number.

10881181 is a deficient number, since it is larger than the sum of its proper divisors (63071).

10881181 is an equidigital number, since it uses as much as digits as its factorization.

10881181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63070.

The product of its (nonzero) digits is 512, while the sum is 28.

The square root of 10881181 is about 3298.6635172445. The cubic root of 10881181 is about 221.5943475492.

Adding to 10881181 its reverse (18118801), we get a palindrome (28999982).

The spelling of 10881181 in words is "ten million, eight hundred eighty-one thousand, one hundred eighty-one".