856193311 has 2 divisors, whose sum is σ = 856193312. Its totient is φ = 856193310.

The previous prime is 856193297. The next prime is 856193347. The reversal of 856193311 is 113391658.

856193311 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 856193311 - 2⁷ = 856193183 is a prime.

It is a super-2 number, since 2×856193311² = 1466133971602285442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (856193411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428096655 + 428096656.

It is an arithmetic number, because the mean of its divisors is an integer number (428096656).

Almost surely, 2^856193311 is an apocalyptic number.

856193311 is a deficient number, since it is larger than the sum of its proper divisors (1).

856193311 is an equidigital number, since it uses as much as digits as its factorization.

856193311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 37.

The square root of 856193311 is about 29260.7811071407. The cubic root of 856193311 is about 949.5633491010.

The spelling of 856193311 in words is "eight hundred fifty-six million, one hundred ninety-three thousand, three hundred eleven".