31112200112 has 20 divisors (see below), whose sum is σ = 68891300496. Its totient is φ = 13333800000.

The previous prime is 31112200103. The next prime is 31112200121. The reversal of 31112200112 is 21100221113.

It is an interprime number because it is at equal distance from previous prime (31112200103) and next prime (31112200121).

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 138893639 + ... + 138893862.

Almost surely, 2^31112200112 is an apocalyptic number.

It is an amenable number.

31112200112 is an abundant number, since it is smaller than the sum of its proper divisors (37779100384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31112200112 is a wasteful number, since it uses less digits than its factorization.

31112200112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277787516 (or 277787510 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 31112200112 its reverse (21100221113), we get a palindrome (52212421225).

The spelling of 31112200112 in words is "thirty-one billion, one hundred twelve million, two hundred thousand, one hundred twelve".