83531131 has 2 divisors, whose sum is σ = 83531132. Its totient is φ = 83531130.

The previous prime is 83531113. The next prime is 83531159. The reversal of 83531131 is 13113538.

Together with previous prime (83531113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83531131 - 2⁵ = 83531099 is a prime.

It is a super-2 number, since 2×83531131² = 13954899692278322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 83531096 and 83531105.

It is not a weakly prime, because it can be changed into another prime (83531171) 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, 41765565 + 41765566.

It is an arithmetic number, because the mean of its divisors is an integer number (41765566).

Almost surely, 2^83531131 is an apocalyptic number.

83531131 is a deficient number, since it is larger than the sum of its proper divisors (1).

83531131 is an equidigital number, since it uses as much as digits as its factorization.

83531131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 25.

The square root of 83531131 is about 9139.5366950409. The cubic root of 83531131 is about 437.1355436602.

Adding to 83531131 its reverse (13113538), we get a palindrome (96644669).

The spelling of 83531131 in words is "eighty-three million, five hundred thirty-one thousand, one hundred thirty-one".