8531316 has 18 divisors (see below), whose sum is σ = 21565362. Its totient is φ = 2843760.

The previous prime is 8531309. The next prime is 8531317. The reversal of 8531316 is 6131358.

It can be written as a sum of positive squares in only one way, i.e., 5503716 + 3027600 = 2346^2 + 1740^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 8531316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8531317) 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, 118455 + ... + 118526.

Almost surely, 2^8531316 is an apocalyptic number.

It is an amenable number.

8531316 is an abundant number, since it is smaller than the sum of its proper divisors (13034046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8531316 is a wasteful number, since it uses less digits than its factorization.

8531316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236991 (or 236986 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 8531316 is about 2920.8416595221. The cubic root of 8531316 is about 204.3330775612. Note that the first 3 decimals are identical.

The spelling of 8531316 in words is "eight million, five hundred thirty-one thousand, three hundred sixteen".