11312012124 has 48 divisors (see below), whose sum is σ = 33517075200. Its totient is φ = 3232003248.

The previous prime is 11312012119. The next prime is 11312012167. The reversal of 11312012124 is 42121021311.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11312012097 and 11312012106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7480734 + ... + 7482245.

It is an arithmetic number, because the mean of its divisors is an integer number (698272400).

Almost surely, 2^11312012124 is an apocalyptic number.

11312012124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11312012124 is an abundant number, since it is smaller than the sum of its proper divisors (22205063076).

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

11312012124 is a wasteful number, since it uses less digits than its factorization.

11312012124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14962999 (or 14962991 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 11312012124 its reverse (42121021311), we get a palindrome (53433033435).

The spelling of 11312012124 in words is "eleven billion, three hundred twelve million, twelve thousand, one hundred twenty-four".