820326511 has 2 divisors, whose sum is σ = 820326512. Its totient is φ = 820326510.

The previous prime is 820326497. The next prime is 820326541. The reversal of 820326511 is 115623028.

820326511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 820326511 - 2²⁵ = 786772079 is a prime.

It is a super-3 number, since 3×820326511³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 820326511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (820326541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410163255 + 410163256.

It is an arithmetic number, because the mean of its divisors is an integer number (410163256).

Almost surely, 2^820326511 is an apocalyptic number.

820326511 is a deficient number, since it is larger than the sum of its proper divisors (1).

820326511 is an equidigital number, since it uses as much as digits as its factorization.

820326511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 820326511 is about 28641.3426884984. The cubic root of 820326511 is about 936.1143779766.

Adding to 820326511 its reverse (115623028), we get a palindrome (935949539).

The spelling of 820326511 in words is "eight hundred twenty million, three hundred twenty-six thousand, five hundred eleven".