856332316331 has 4 divisors (see below), whose sum is σ = 860635494000. Its totient is φ = 852029138664.

The previous prime is 856332316219. The next prime is 856332316361. The reversal of 856332316331 is 133613233658.

856332316331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133613233658 = 2 ⋅66806616829.

It is a cyclic number.

It is not a de Polignac number, because 856332316331 - 2¹⁸ = 856332054187 is a prime.

It is a super-2 number, since 2×856332316331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (856332316361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2151588536 + ... + 2151588933.

It is an arithmetic number, because the mean of its divisors is an integer number (215158873500).

Almost surely, 2^856332316331 is an apocalyptic number.

856332316331 is a deficient number, since it is larger than the sum of its proper divisors (4303177669).

856332316331 is a wasteful number, since it uses less digits than its factorization.

856332316331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4303177668.

The product of its digits is 699840, while the sum is 44.

Adding to 856332316331 its reverse (133613233658), we get a palindrome (989945549989).

The spelling of 856332316331 in words is "eight hundred fifty-six billion, three hundred thirty-two million, three hundred sixteen thousand, three hundred thirty-one".