83716531 has 2 divisors, whose sum is σ = 83716532. Its totient is φ = 83716530.

The previous prime is 83716519. The next prime is 83716561. The reversal of 83716531 is 13561738.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83716531 - 2⁷ = 83716403 is a prime.

It is a super-3 number, since 3×83716531³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (83716561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41858265 + 41858266.

It is an arithmetic number, because the mean of its divisors is an integer number (41858266).

Almost surely, 2^83716531 is an apocalyptic number.

83716531 is a deficient number, since it is larger than the sum of its proper divisors (1).

83716531 is an equidigital number, since it uses as much as digits as its factorization.

83716531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 83716531 is about 9149.6738193227. The cubic root of 83716531 is about 437.4587167576.

The spelling of 83716531 in words is "eighty-three million, seven hundred sixteen thousand, five hundred thirty-one".