856370023 has 2 divisors, whose sum is σ = 856370024. Its totient is φ = 856370022.

The previous prime is 856369991. The next prime is 856370051. The reversal of 856370023 is 320073658.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 856370023 - 2⁵ = 856369991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (856371023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428185011 + 428185012.

It is an arithmetic number, because the mean of its divisors is an integer number (428185012).

Almost surely, 2^856370023 is an apocalyptic number.

856370023 is a deficient number, since it is larger than the sum of its proper divisors (1).

856370023 is an equidigital number, since it uses as much as digits as its factorization.

856370023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 856370023 is about 29263.8005563187. The cubic root of 856370023 is about 949.6286722367.

The spelling of 856370023 in words is "eight hundred fifty-six million, three hundred seventy thousand, twenty-three".