31312322221112 has 32 divisors (see below), whose sum is σ = 59546528740800. Its totient is φ = 15433866240000.

The previous prime is 31312322221099. The next prime is 31312322221121. The reversal of 31312322221112 is 21112222321313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38241389 + ... + 39051612.

It is an arithmetic number, because the mean of its divisors is an integer number (1860829023150).

Almost surely, 2^{31312322221112} is an apocalyptic number.

It is an amenable number.

31312322221112 is a deficient number, since it is larger than the sum of its proper divisors (28234206519688).

31312322221112 is a wasteful number, since it uses less digits than its factorization.

31312322221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77293727 (or 77293723 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

Adding to 31312322221112 its reverse (21112222321313), we get a palindrome (52424544542425).

The spelling of 31312322221112 in words is "thirty-one trillion, three hundred twelve billion, three hundred twenty-two million, two hundred twenty-one thousand, one hundred twelve".