8997131 has 16 divisors (see below), whose sum is σ = 11194848. Its totient is φ = 7104000.

The previous prime is 8997119. The next prime is 8997139. The reversal of 8997131 is 1317998.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8997131 is a prime.

It is a super-2 number, since 2×8997131² = 161896732462322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8997139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 581 + ... + 4281.

It is an arithmetic number, because the mean of its divisors is an integer number (699678).

Almost surely, 2^8997131 is an apocalyptic number.

8997131 is a deficient number, since it is larger than the sum of its proper divisors (2197717).

8997131 is a wasteful number, since it uses less digits than its factorization.

8997131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3742.

The product of its digits is 13608, while the sum is 38.

The square root of 8997131 is about 2999.5217952200. The cubic root of 8997131 is about 207.9862771395.

The spelling of 8997131 in words is "eight million, nine hundred ninety-seven thousand, one hundred thirty-one".