856970351 has 2 divisors, whose sum is σ = 856970352. Its totient is φ = 856970350.

The previous prime is 856970347. The next prime is 856970369. The reversal of 856970351 is 153079658.

856970351 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 856970351 - 2² = 856970347 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (856970311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428485175 + 428485176.

It is an arithmetic number, because the mean of its divisors is an integer number (428485176).

Almost surely, 2^856970351 is an apocalyptic number.

856970351 is a deficient number, since it is larger than the sum of its proper divisors (1).

856970351 is an equidigital number, since it uses as much as digits as its factorization.

856970351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 856970351 is about 29274.0559369555. The cubic root of 856970351 is about 949.8505216338.

The spelling of 856970351 in words is "eight hundred fifty-six million, nine hundred seventy thousand, three hundred fifty-one".