83242321 has 2 divisors, whose sum is σ = 83242322. Its totient is φ = 83242320.

The previous prime is 83242303. The next prime is 83242337. The reversal of 83242321 is 12324238.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43046721 + 40195600 = 6561^2 + 6340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83242321 is a prime.

It is not a weakly prime, because it can be changed into another prime (83242351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41621160 + 41621161.

It is an arithmetic number, because the mean of its divisors is an integer number (41621161).

Almost surely, 2^83242321 is an apocalyptic number.

It is an amenable number.

83242321 is a deficient number, since it is larger than the sum of its proper divisors (1).

83242321 is an equidigital number, since it uses as much as digits as its factorization.

83242321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 25.

The square root of 83242321 is about 9123.7229791352. The cubic root of 83242321 is about 436.6311612515.

Adding to 83242321 its reverse (12324238), we get a palindrome (95566559).

The spelling of 83242321 in words is "eighty-three million, two hundred forty-two thousand, three hundred twenty-one".