531680791 has 2 divisors, whose sum is σ = 531680792. Its totient is φ = 531680790.

The previous prime is 531680761. The next prime is 531680813. The reversal of 531680791 is 197086135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 531680791 - 2⁵ = 531680759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531680741) 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, 265840395 + 265840396.

It is an arithmetic number, because the mean of its divisors is an integer number (265840396).

Almost surely, 2^531680791 is an apocalyptic number.

531680791 is a deficient number, since it is larger than the sum of its proper divisors (1).

531680791 is an equidigital number, since it uses as much as digits as its factorization.

531680791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 531680791 is about 23058.2044183844. The cubic root of 531680791 is about 810.1218081307.

The spelling of 531680791 in words is "five hundred thirty-one million, six hundred eighty thousand, seven hundred ninety-one".