516231811 has 2 divisors, whose sum is σ = 516231812. Its totient is φ = 516231810.

The previous prime is 516231791. The next prime is 516231853. The reversal of 516231811 is 118132615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 516231811 - 2¹³ = 516223619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 516231811.

It is not a weakly prime, because it can be changed into another prime (516631811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258115905 + 258115906.

It is an arithmetic number, because the mean of its divisors is an integer number (258115906).

Almost surely, 2^516231811 is an apocalyptic number.

516231811 is a deficient number, since it is larger than the sum of its proper divisors (1).

516231811 is an equidigital number, since it uses as much as digits as its factorization.

516231811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 28.

The square root of 516231811 is about 22720.7352653914. The cubic root of 516231811 is about 802.1980235638.

The spelling of 516231811 in words is "five hundred sixteen million, two hundred thirty-one thousand, eight hundred eleven".