985231223 has 2 divisors, whose sum is σ = 985231224. Its totient is φ = 985231222.

The previous prime is 985231211. The next prime is 985231237. The reversal of 985231223 is 322132589.

It is a weak prime.

It is an emirp because it is prime and its reverse (322132589) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 985231223 - 2²⁴ = 968454007 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985231823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492615611 + 492615612.

It is an arithmetic number, because the mean of its divisors is an integer number (492615612).

Almost surely, 2^985231223 is an apocalyptic number.

985231223 is a deficient number, since it is larger than the sum of its proper divisors (1).

985231223 is an equidigital number, since it uses as much as digits as its factorization.

985231223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 985231223 is about 31388.3931254851. The cubic root of 985231223 is about 995.0526383102.

The spelling of 985231223 in words is "nine hundred eighty-five million, two hundred thirty-one thousand, two hundred twenty-three".