31312232212112 has 40 divisors (see below), whose sum is σ = 60684663611520. Its totient is φ = 15651674589440.

The previous prime is 31312232212069. The next prime is 31312232212117. The reversal of 31312232212112 is 21121223221313.

It is a super-2 number, since 2×31312232212112² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31312232212117) 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 in 7 ways as a sum of consecutive naturals, for example, 1101017189 + ... + 1101045627.

It is an arithmetic number, because the mean of its divisors is an integer number (1517116590288).

Almost surely, 2^{31312232212112} is an apocalyptic number.

It is an amenable number.

31312232212112 is a deficient number, since it is larger than the sum of its proper divisors (29372431399408).

31312232212112 is a wasteful number, since it uses less digits than its factorization.

31312232212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45551 (or 45545 counting only the distinct ones).

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

Adding to 31312232212112 its reverse (21121223221313), we get a palindrome (52433455433425).

The spelling of 31312232212112 in words is "thirty-one trillion, three hundred twelve billion, two hundred thirty-two million, two hundred twelve thousand, one hundred twelve".