31223242303112 has 16 divisors (see below), whose sum is σ = 59648175155340. Its totient is φ = 15317062261696.

The previous prime is 31223242303069. The next prime is 31223242303147. The reversal of 31223242303112 is 21130324232213.

It can be written as a sum of positive squares in 2 ways, for example, as 26537601949156 + 4685640353956 = 5151466^2 + 2164634^2 .

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, 36819860783 + ... + 36819861630.

Almost surely, 2^{31223242303112} is an apocalyptic number.

It is an amenable number.

31223242303112 is a deficient number, since it is larger than the sum of its proper divisors (28424932852228).

31223242303112 is a wasteful number, since it uses less digits than its factorization.

31223242303112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73639722472 (or 73639722468 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 31223242303112 its reverse (21130324232213), we get a palindrome (52353566535325).

The spelling of 31223242303112 in words is "thirty-one trillion, two hundred twenty-three billion, two hundred forty-two million, three hundred three thousand, one hundred twelve".