11312031012 has 24 divisors (see below), whose sum is σ = 26641421856. Its totient is φ = 3735436608.

The previous prime is 11312030897. The next prime is 11312031041. The reversal of 11312031012 is 21013021311.

It is a happy number.

11312031012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11312030982 and 11312031000.

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 7 ways as a sum of consecutive naturals, for example, 4403713 + ... + 4406280.

It is an arithmetic number, because the mean of its divisors is an integer number (1110059244).

Almost surely, 2^11312031012 is an apocalyptic number.

11312031012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11312031012 is an abundant number, since it is smaller than the sum of its proper divisors (15329390844).

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

11312031012 is a wasteful number, since it uses less digits than its factorization.

11312031012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8810107 (or 8810105 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11312031012 its reverse (21013021311), we get a palindrome (32325052323).

The spelling of 11312031012 in words is "eleven billion, three hundred twelve million, thirty-one thousand, twelve".