31431222244 has 12 divisors (see below), whose sum is σ = 55008442300. Its totient is φ = 15714524448.

The previous prime is 31431222211. The next prime is 31431222269. The reversal of 31431222244 is 44222213413.

It can be written as a sum of positive squares in 2 ways, for example, as 2705040100 + 28726182144 = 52010^2 + 169488^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204759 + ... + 323710.

Almost surely, 2^31431222244 is an apocalyptic number.

It is an amenable number.

31431222244 is a deficient number, since it is larger than the sum of its proper divisors (23577220056).

31431222244 is a wasteful number, since it uses less digits than its factorization.

31431222244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543342 (or 543340 counting only the distinct ones).

The product of its digits is 9216, while the sum is 28.

Adding to 31431222244 its reverse (44222213413), we get a palindrome (75653435657).

The spelling of 31431222244 in words is "thirty-one billion, four hundred thirty-one million, two hundred twenty-two thousand, two hundred forty-four".