31223112022012 has 12 divisors (see below), whose sum is σ = 54640681421760. Its totient is φ = 15611488758656.

The previous prime is 31223112021971. The next prime is 31223112022043. The reversal of 31223112022012 is 21022021132213.

31223112022012 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×31223112022012² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 15761173 + ... + 17631244.

It is an arithmetic number, because the mean of its divisors is an integer number (4553390118480).

Almost surely, 2^{31223112022012} is an apocalyptic number.

It is an amenable number.

31223112022012 is a deficient number, since it is larger than the sum of its proper divisors (23417569399748).

31223112022012 is a wasteful number, since it uses less digits than its factorization.

31223112022012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33626180 (or 33626178 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 31223112022012 its reverse (21022021132213), we get a palindrome (52245133154225).

The spelling of 31223112022012 in words is "thirty-one trillion, two hundred twenty-three billion, one hundred twelve million, twenty-two thousand, twelve".