2031223443985 has 4 divisors (see below), whose sum is σ = 2437468132788. Its totient is φ = 1624978755184.

The previous prime is 2031223443863. The next prime is 2031223444049. The reversal of 2031223443985 is 5893443221302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 944294175504 + 1086929268481 = 971748^2 + 1042559^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031223443985 - 2²³ = 2031215055377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203122344394 + ... + 203122344403.

It is an arithmetic number, because the mean of its divisors is an integer number (609367033197).

Almost surely, 2^{2031223443985} is an apocalyptic number.

It is an amenable number.

2031223443985 is a deficient number, since it is larger than the sum of its proper divisors (406244688803).

2031223443985 is an equidigital number, since it uses as much as digits as its factorization.

2031223443985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406244688802.

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 2031223443985 in words is "two trillion, thirty-one billion, two hundred twenty-three million, four hundred forty-three thousand, nine hundred eighty-five".