83617231 has 4 divisors (see below), whose sum is σ = 83635552. Its totient is φ = 83598912.

The previous prime is 83617217. The next prime is 83617249. The reversal of 83617231 is 13271638.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 83617231 - 2⁷ = 83617103 is a prime.

It is a super-2 number, since 2×83617231² = 13983682640214722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83617193 and 83617202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83617291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3775 + ... + 13471.

It is an arithmetic number, because the mean of its divisors is an integer number (20908888).

Almost surely, 2^83617231 is an apocalyptic number.

83617231 is a deficient number, since it is larger than the sum of its proper divisors (18321).

83617231 is an equidigital number, since it uses as much as digits as its factorization.

83617231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18320.

The product of its digits is 6048, while the sum is 31.

The square root of 83617231 is about 9144.2457862855. The cubic root of 83617231 is about 437.2856850731.

Adding to 83617231 its reverse (13271638), we get a palindrome (96888869).

The spelling of 83617231 in words is "eighty-three million, six hundred seventeen thousand, two hundred thirty-one".