83531 has 4 divisors (see below), whose sum is σ = 95472. Its totient is φ = 71592.

The previous prime is 83497. The next prime is 83537. The reversal of 83531 is 13538.

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 83531 - 2¹⁰ = 82507 is a prime.

It is a super-2 number, since 2×83531² = 13954855922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5960 + ... + 5973.

It is an arithmetic number, because the mean of its divisors is an integer number (23868).

2⁸³⁵³¹ is an apocalyptic number.

83531 is a deficient number, since it is larger than the sum of its proper divisors (11941).

83531 is a wasteful number, since it uses less digits than its factorization.

83531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11940.

The product of its digits is 360, while the sum is 20.

The square root of 83531 is about 289.0173005202. The cubic root of 83531 is about 43.7135315143.

The spelling of 83531 in words is "eighty-three thousand, five hundred thirty-one".