83240231 has 2 divisors, whose sum is σ = 83240232. Its totient is φ = 83240230.

The previous prime is 83240189. The next prime is 83240233. The reversal of 83240231 is 13204238.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83240231 - 2¹⁰ = 83239207 is a prime.

It is a super-2 number, since 2×83240231² = 13857872113866722, which contains 22 as substring.

Together with 83240233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 83240197 and 83240206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83240233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41620115 + 41620116.

It is an arithmetic number, because the mean of its divisors is an integer number (41620116).

Almost surely, 2^83240231 is an apocalyptic number.

83240231 is a deficient number, since it is larger than the sum of its proper divisors (1).

83240231 is an equidigital number, since it uses as much as digits as its factorization.

83240231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 83240231 is about 9123.6084418392. The cubic root of 83240231 is about 436.6275069934.

Adding to 83240231 its reverse (13204238), we get a palindrome (96444469).

The spelling of 83240231 in words is "eighty-three million, two hundred forty thousand, two hundred thirty-one".