83320631 has 4 divisors (see below), whose sum is σ = 83920200. Its totient is φ = 82721064.

The previous prime is 83320619. The next prime is 83320637. The reversal of 83320631 is 13602338.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 83320631 - 2¹⁸ = 83058487 is a prime.

It is a super-2 number, since 2×83320631² = 13884655100476322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83320631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83320637) 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, 299576 + ... + 299853.

It is an arithmetic number, because the mean of its divisors is an integer number (20980050).

Almost surely, 2^83320631 is an apocalyptic number.

83320631 is a deficient number, since it is larger than the sum of its proper divisors (599569).

83320631 is a wasteful number, since it uses less digits than its factorization.

83320631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599568.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 83320631 is about 9128.0135297884. The cubic root of 83320631 is about 436.7680382199.

Adding to 83320631 its reverse (13602338), we get a palindrome (96922969).

The spelling of 83320631 in words is "eighty-three million, three hundred twenty thousand, six hundred thirty-one".