824147231 has 2 divisors, whose sum is σ = 824147232. Its totient is φ = 824147230.

The previous prime is 824147227. The next prime is 824147243. The reversal of 824147231 is 132741428.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 824147231 - 2² = 824147227 is a prime.

It is a super-2 number, since 2×824147231² = 1358437316729934722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (824147531) 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 as a sum of consecutive naturals, namely, 412073615 + 412073616.

It is an arithmetic number, because the mean of its divisors is an integer number (412073616).

Almost surely, 2^824147231 is an apocalyptic number.

824147231 is a deficient number, since it is larger than the sum of its proper divisors (1).

824147231 is an equidigital number, since it uses as much as digits as its factorization.

824147231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 32.

The square root of 824147231 is about 28707.9645917296. The cubic root of 824147231 is about 937.5654637783.

Adding to 824147231 its reverse (132741428), we get a palindrome (956888659).

The spelling of 824147231 in words is "eight hundred twenty-four million, one hundred forty-seven thousand, two hundred thirty-one".