13511212312 has 64 divisors (see below), whose sum is σ = 27469008000. Its totient is φ = 6193428480.

The previous prime is 13511212301. The next prime is 13511212331. The reversal of 13511212312 is 21321211531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12879564 + ... + 12880612.

It is an arithmetic number, because the mean of its divisors is an integer number (429203250).

Almost surely, 2^13511212312 is an apocalyptic number.

It is an amenable number.

13511212312 is an abundant number, since it is smaller than the sum of its proper divisors (13957795688).

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

13511212312 is a wasteful number, since it uses less digits than its factorization.

13511212312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796 (or 1792 counting only the distinct ones).

The product of its digits is 360, while the sum is 22.

Adding to 13511212312 its reverse (21321211531), we get a palindrome (34832423843).

The spelling of 13511212312 in words is "thirteen billion, five hundred eleven million, two hundred twelve thousand, three hundred twelve".