36531 has 20 divisors (see below), whose sum is σ = 60984. Its totient is φ = 21600.

The previous prime is 36529. The next prime is 36541. The reversal of 36531 is 13563.

It is not a de Polignac number, because 36531 - 2¹ = 36529 is a prime.

It is a super-2 number, since 2×36531² = 2669027922, which contains 22 as substring.

It is a nialpdrome in base 9.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 36531.

It is not an unprimeable number, because it can be changed into a prime (36541) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 871 + ... + 911.

2³⁶⁵³¹ is an apocalyptic number.

36531 is a deficient number, since it is larger than the sum of its proper divisors (24453).

36531 is a wasteful number, since it uses less digits than its factorization.

36531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64 (or 55 counting only the distinct ones).

The product of its digits is 270, while the sum is 18.

The square root of 36531 is about 191.1308452344. The cubic root of 36531 is about 33.1808255274.

The spelling of 36531 in words is "thirty-six thousand, five hundred thirty-one".