31243322444 has 12 divisors (see below), whose sum is σ = 54697905024. Its totient is φ = 15615349584.

The previous prime is 31243322431. The next prime is 31243322491. The reversal of 31243322444 is 44422334213.

It is a super-2 number, since 2×31243322444² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31243322444.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1566764 + ... + 1586579.

It is an arithmetic number, because the mean of its divisors is an integer number (4558158752).

Almost surely, 2^31243322444 is an apocalyptic number.

It is an amenable number.

31243322444 is a deficient number, since it is larger than the sum of its proper divisors (23454582580).

31243322444 is a wasteful number, since it uses less digits than its factorization.

31243322444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3155824 (or 3155822 counting only the distinct ones).

The product of its digits is 55296, while the sum is 32.

Adding to 31243322444 its reverse (44422334213), we get a palindrome (75665656657).

The spelling of 31243322444 in words is "thirty-one billion, two hundred forty-three million, three hundred twenty-two thousand, four hundred forty-four".