8861131 has 4 divisors (see below), whose sum is σ = 9382392. Its totient is φ = 8339872.

The previous prime is 8861119. The next prime is 8861137. The reversal of 8861131 is 1311688.

It is a happy number.

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 8861131 - 2⁹ = 8860619 is a prime.

It is a super-3 number, since 3×8861131³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

8861131 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8861131.

It is not an unprimeable number, because it can be changed into a prime (8861137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260605 + ... + 260638.

It is an arithmetic number, because the mean of its divisors is an integer number (2345598).

Almost surely, 2^8861131 is an apocalyptic number.

8861131 is a deficient number, since it is larger than the sum of its proper divisors (521261).

8861131 is a wasteful number, since it uses less digits than its factorization.

8861131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521260.

The product of its digits is 1152, while the sum is 28.

The square root of 8861131 is about 2976.7651906054. The cubic root of 8861131 is about 206.9329833543.

The spelling of 8861131 in words is "eight million, eight hundred sixty-one thousand, one hundred thirty-one".