31100013312112 has 40 divisors (see below), whose sum is σ = 61563272484096. Its totient is φ = 15212985448896.

The previous prime is 31100013312101. The next prime is 31100013312149. The reversal of 31100013312112 is 21121331000113.

It is a super-2 number, since 2×31100013312112² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31100013312112.

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, 6526738 + ... + 10237105.

Almost surely, 2^{31100013312112} is an apocalyptic number.

It is an amenable number.

31100013312112 is a deficient number, since it is larger than the sum of its proper divisors (30463259171984).

31100013312112 is a wasteful number, since it uses less digits than its factorization.

31100013312112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16766365 (or 16766359 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 31100013312112 its reverse (21121331000113), we get a palindrome (52221344312225).

The spelling of 31100013312112 in words is "thirty-one trillion, one hundred billion, thirteen million, three hundred twelve thousand, one hundred twelve".