820703311 has 2 divisors, whose sum is σ = 820703312. Its totient is φ = 820703310.

The previous prime is 820703287. The next prime is 820703329. The reversal of 820703311 is 113307028.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 820703311 - 2²⁹ = 283832399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (820703371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410351655 + 410351656.

It is an arithmetic number, because the mean of its divisors is an integer number (410351656).

Almost surely, 2^820703311 is an apocalyptic number.

820703311 is a deficient number, since it is larger than the sum of its proper divisors (1).

820703311 is an equidigital number, since it uses as much as digits as its factorization.

820703311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 820703311 is about 28647.9198372238. The cubic root of 820703311 is about 936.2576842904.

The spelling of 820703311 in words is "eight hundred twenty million, seven hundred three thousand, three hundred eleven".