824942231 has 2 divisors, whose sum is σ = 824942232. Its totient is φ = 824942230.

The previous prime is 824942197. The next prime is 824942281. The reversal of 824942231 is 132249428.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-824942231 is a prime.

It is a super-2 number, since 2×824942231² = 1361059368974514722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 824942191 and 824942200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (824942281) 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 as a sum of consecutive naturals, namely, 412471115 + 412471116.

It is an arithmetic number, because the mean of its divisors is an integer number (412471116).

Almost surely, 2^824942231 is an apocalyptic number.

824942231 is a deficient number, since it is larger than the sum of its proper divisors (1).

824942231 is an equidigital number, since it uses as much as digits as its factorization.

824942231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 35.

The square root of 824942231 is about 28721.8075858745. The cubic root of 824942231 is about 937.8668359022.

The spelling of 824942231 in words is "eight hundred twenty-four million, nine hundred forty-two thousand, two hundred thirty-one".