13113212312 has 8 divisors (see below), whose sum is σ = 24587273100. Its totient is φ = 6556606152.

The previous prime is 13113212303. The next prime is 13113212339. The reversal of 13113212312 is 21321231131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 819575762 + ... + 819575777.

Almost surely, 2^13113212312 is an apocalyptic number.

It is an amenable number.

13113212312 is a deficient number, since it is larger than the sum of its proper divisors (11474060788).

13113212312 is a wasteful number, since it uses less digits than its factorization.

13113212312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639151545 (or 1639151541 counting only the distinct ones).

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

Adding to 13113212312 its reverse (21321231131), we get a palindrome (34434443443).

The spelling of 13113212312 in words is "thirteen billion, one hundred thirteen million, two hundred twelve thousand, three hundred twelve".