985281823 has 2 divisors, whose sum is σ = 985281824. Its totient is φ = 985281822.

The previous prime is 985281811. The next prime is 985281827. The reversal of 985281823 is 328182589.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985281823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985281827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492640911 + 492640912.

It is an arithmetic number, because the mean of its divisors is an integer number (492640912).

Almost surely, 2^985281823 is an apocalyptic number.

985281823 is a deficient number, since it is larger than the sum of its proper divisors (1).

985281823 is an equidigital number, since it uses as much as digits as its factorization.

985281823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 46.

The square root of 985281823 is about 31389.1991455660. The cubic root of 985281823 is about 995.0696728229.

The spelling of 985281823 in words is "nine hundred eighty-five million, two hundred eighty-one thousand, eight hundred twenty-three".