11312304012 has 18 divisors (see below), whose sum is σ = 28594990788. Its totient is φ = 3770767992.

The previous prime is 11312304007. The next prime is 11312304019. The reversal of 11312304012 is 21040321311.

11312304012 is a `hidden beast` number, since 1 + 1 + 31 + 230 + 401 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×11312304012² (a number of 21 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (11312304019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 157115298 + ... + 157115369.

Almost surely, 2^11312304012 is an apocalyptic number.

11312304012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11312304012 is an abundant number, since it is smaller than the sum of its proper divisors (17282686776).

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

11312304012 is a wasteful number, since it uses less digits than its factorization.

11312304012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314230677 (or 314230672 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11312304012 its reverse (21040321311), we get a palindrome (32352625323).

The spelling of 11312304012 in words is "eleven billion, three hundred twelve million, three hundred four thousand, twelve".