83221431 has 8 divisors (see below), whose sum is σ = 113668464. Its totient is φ = 54127680.

The previous prime is 83221427. The next prime is 83221451. The reversal of 83221431 is 13412238.

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

It is not a de Polignac number, because 83221431 - 2² = 83221427 is a prime.

It is a super-2 number, since 2×83221431² = 13851613155375522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83221451) 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 7 ways as a sum of consecutive naturals, for example, 338176 + ... + 338421.

It is an arithmetic number, because the mean of its divisors is an integer number (14208558).

Almost surely, 2^83221431 is an apocalyptic number.

83221431 is a deficient number, since it is larger than the sum of its proper divisors (30447033).

83221431 is a wasteful number, since it uses less digits than its factorization.

83221431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676641.

The product of its digits is 1152, while the sum is 24.

The square root of 83221431 is about 9122.5780895534. The cubic root of 83221431 is about 436.5946334054.

Adding to 83221431 its reverse (13412238), we get a palindrome (96633669).

The spelling of 83221431 in words is "eighty-three million, two hundred twenty-one thousand, four hundred thirty-one".