791537231 has 2 divisors, whose sum is σ = 791537232. Its totient is φ = 791537230.

The previous prime is 791537209. The next prime is 791537233. The reversal of 791537231 is 132735197.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 791537231 - 2¹⁸ = 791275087 is a prime.

It is a super-2 number, since 2×791537231² = 1253062376118294722, which contains 22 as substring.

Together with 791537233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (791537233) 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, 395768615 + 395768616.

It is an arithmetic number, because the mean of its divisors is an integer number (395768616).

Almost surely, 2^791537231 is an apocalyptic number.

791537231 is a deficient number, since it is larger than the sum of its proper divisors (1).

791537231 is an equidigital number, since it uses as much as digits as its factorization.

791537231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39690, while the sum is 38.

The square root of 791537231 is about 28134.2714673759. The cubic root of 791537231 is about 925.0327647513.

The spelling of 791537231 in words is "seven hundred ninety-one million, five hundred thirty-seven thousand, two hundred thirty-one".