13231211392 has 128 divisors (see below), whose sum is σ = 30883968000. Its totient is φ = 5528549376.

The previous prime is 13231211387. The next prime is 13231211407. The reversal of 13231211392 is 29311213231.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 13231211392.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 15960034 + ... + 15960862.

It is an arithmetic number, because the mean of its divisors is an integer number (241281000).

Almost surely, 2^13231211392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13231211392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15441984000).

13231211392 is an abundant number, since it is smaller than the sum of its proper divisors (17652756608).

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

13231211392 is an equidigital number, since it uses as much as digits as its factorization.

13231211392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276 (or 1264 counting only the distinct ones).

The product of its digits is 1944, while the sum is 28.

The spelling of 13231211392 in words is "thirteen billion, two hundred thirty-one million, two hundred eleven thousand, three hundred ninety-two".