116531 has 2 divisors, whose sum is σ = 116532. Its totient is φ = 116530.

The previous prime is 116507. The next prime is 116533. The reversal of 116531 is 135611.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116531 is a prime.

It is a super-2 number, since 2×116531² = 27158947922, which contains 22 as substring.

Together with 116533, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (116533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58265 + 58266.

It is an arithmetic number, because the mean of its divisors is an integer number (58266).

2¹¹⁶⁵³¹ is an apocalyptic number.

116531 is a deficient number, since it is larger than the sum of its proper divisors (1).

116531 is an equidigital number, since it uses as much as digits as its factorization.

116531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90, while the sum is 17.

The square root of 116531 is about 341.3663720990. The cubic root of 116531 is about 48.8442926269.

The spelling of 116531 in words is "one hundred sixteen thousand, five hundred thirty-one".