11312112312 has 48 divisors (see below), whose sum is σ = 30940327080. Its totient is φ = 3733368000.

The previous prime is 11312112283. The next prime is 11312112313. The reversal of 11312112312 is 21321121311.

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

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312112313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 770514 + ... + 785057.

Almost surely, 2^11312112312 is an apocalyptic number.

11312112312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11312112312 is an abundant number, since it is smaller than the sum of its proper divisors (19628214768).

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

11312112312 is a wasteful number, since it uses less digits than its factorization.

11312112312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555684 (or 1555677 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 11312112312 its reverse (21321121311), we get a palindrome (32633233623).

The spelling of 11312112312 in words is "eleven billion, three hundred twelve million, one hundred twelve thousand, three hundred twelve".