31011121112 has 64 divisors (see below), whose sum is σ = 59322654720. Its totient is φ = 15196059648.

The previous prime is 31011121093. The next prime is 31011121121. The reversal of 31011121112 is 21112111013.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 32746223 + ... + 32747169.

It is an arithmetic number, because the mean of its divisors is an integer number (926916480).

Almost surely, 2^31011121112 is an apocalyptic number.

It is an amenable number.

31011121112 is a deficient number, since it is larger than the sum of its proper divisors (28311533608).

31011121112 is a wasteful number, since it uses less digits than its factorization.

31011121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440 (or 1436 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 31011121112 its reverse (21112111013), we get a palindrome (52123232125).

The spelling of 31011121112 in words is "thirty-one billion, eleven million, one hundred twenty-one thousand, one hundred twelve".