31112143112 has 16 divisors (see below), whose sum is σ = 58398075900. Its totient is φ = 15539322880.

The previous prime is 31112143103. The next prime is 31112143147. The reversal of 31112143112 is 21134121113.

It can be written as a sum of positive squares in 2 ways, for example, as 30166826596 + 945316516 = 173686^2 + 30746^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2085689 + ... + 2100552.

Almost surely, 2^31112143112 is an apocalyptic number.

It is an amenable number.

31112143112 is a deficient number, since it is larger than the sum of its proper divisors (27285932788).

31112143112 is a wasteful number, since it uses less digits than its factorization.

31112143112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4187176 (or 4187172 counting only the distinct ones).

The product of its digits is 144, while the sum is 20.

Adding to 31112143112 its reverse (21134121113), we get a palindrome (52246264225).

The spelling of 31112143112 in words is "thirty-one billion, one hundred twelve million, one hundred forty-three thousand, one hundred twelve".