83505631 has 8 divisors (see below), whose sum is σ = 91679184. Its totient is φ = 75429120.

The previous prime is 83505619. The next prime is 83505637. The reversal of 83505631 is 13650538.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83505631 is a prime.

It is a super-2 number, since 2×83505631² = 13946380817416322, 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 = 83505593 and 83505602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83505637) 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 in 7 ways as a sum of consecutive naturals, for example, 22450 + ... + 25903.

It is an arithmetic number, because the mean of its divisors is an integer number (11459898).

Almost surely, 2^83505631 is an apocalyptic number.

83505631 is a deficient number, since it is larger than the sum of its proper divisors (8173553).

83505631 is a wasteful number, since it uses less digits than its factorization.

83505631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48521.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 83505631 is about 9138.1415506655. The cubic root of 83505631 is about 437.0910568893.

The spelling of 83505631 in words is "eighty-three million, five hundred five thousand, six hundred thirty-one".