11312321312 has 24 divisors (see below), whose sum is σ = 22278364416. Its totient is φ = 5654324032.

The previous prime is 11312321309. The next prime is 11312321333. The reversal of 11312321312 is 21312321311.

It is a happy number.

It is a super-3 number, since 3×11312321312³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45533 + ... + 157155.

It is an arithmetic number, because the mean of its divisors is an integer number (928265184).

Almost surely, 2^11312321312 is an apocalyptic number.

It is an amenable number.

11312321312 is a deficient number, since it is larger than the sum of its proper divisors (10966043104).

11312321312 is a wasteful number, since it uses less digits than its factorization.

11312321312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114800 (or 114792 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

Adding to 11312321312 its reverse (21312321311), we get a palindrome (32624642623).

Subtracting 11312321312 from its reverse (21312321311), we obtain a palindrome (9999999999).

The spelling of 11312321312 in words is "eleven billion, three hundred twelve million, three hundred twenty-one thousand, three hundred twelve".