83445231 has 8 divisors (see below), whose sum is σ = 117805104. Its totient is φ = 52357760.

The previous prime is 83445227. The next prime is 83445239. The reversal of 83445231 is 13254438.

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

It is a cyclic number.

It is not a de Polignac number, because 83445231 - 2² = 83445227 is a prime.

It is a super-2 number, since 2×83445231² = 13926213153286722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83445239) 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, 818040 + ... + 818141.

It is an arithmetic number, because the mean of its divisors is an integer number (14725638).

Almost surely, 2^83445231 is an apocalyptic number.

83445231 is a deficient number, since it is larger than the sum of its proper divisors (34359873).

83445231 is a wasteful number, since it uses less digits than its factorization.

83445231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636201.

The product of its digits is 11520, while the sum is 30.

The square root of 83445231 is about 9134.8361233248. The cubic root of 83445231 is about 436.9856481592.

Adding to 83445231 its reverse (13254438), we get a palindrome (96699669).

The spelling of 83445231 in words is "eighty-three million, four hundred forty-five thousand, two hundred thirty-one".