31223455324244 has 6 divisors (see below), whose sum is σ = 54641046817434. Its totient is φ = 15611727662120.

The previous prime is 31223455324211. The next prime is 31223455324247. The reversal of 31223455324244 is 44242355432213.

It can be written as a sum of positive squares in only one way, i.e., 29992731339844 + 1230723984400 = 5476562^2 + 1109380^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31223455324195 and 31223455324204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31223455324247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3902931915527 + ... + 3902931915534.

It is an arithmetic number, because the mean of its divisors is an integer number (9106841136239).

Almost surely, 2^{31223455324244} is an apocalyptic number.

It is an amenable number.

31223455324244 is a deficient number, since it is larger than the sum of its proper divisors (23417591493190).

31223455324244 is a wasteful number, since it uses less digits than its factorization.

31223455324244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7805863831065 (or 7805863831063 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 44.

The spelling of 31223455324244 in words is "thirty-one trillion, two hundred twenty-three billion, four hundred fifty-five million, three hundred twenty-four thousand, two hundred forty-four".