89831131 has 8 divisors (see below), whose sum is σ = 98567280. Its totient is φ = 81355872.

The previous prime is 89831089. The next prime is 89831173. The reversal of 89831131 is 13113898.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (89831089) and next prime (89831173).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 89831131 - 2⁹ = 89830619 is a prime.

It is a super-2 number, since 2×89831131² = 16139264193478322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (89831191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64501 + ... + 65878.

It is an arithmetic number, because the mean of its divisors is an integer number (12320910).

Almost surely, 2^89831131 is an apocalyptic number.

89831131 is a deficient number, since it is larger than the sum of its proper divisors (8736149).

89831131 is a wasteful number, since it uses less digits than its factorization.

89831131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130445.

The product of its digits is 5184, while the sum is 34.

The square root of 89831131 is about 9477.9286239136. The cubic root of 89831131 is about 447.8600138605.

The spelling of 89831131 in words is "eighty-nine million, eight hundred thirty-one thousand, one hundred thirty-one".