1231184128384 has 64 divisors (see below), whose sum is σ = 2805786583200. Its totient is φ = 527152619520.

The previous prime is 1231184128367. The next prime is 1231184128439. The reversal of 1231184128384 is 4838214811321.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303112 + ... + 1598200.

Almost surely, 2^{1231184128384} is an apocalyptic number.

1231184128384 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231184128384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1402893291600).

1231184128384 is an abundant number, since it is smaller than the sum of its proper divisors (1574602454816).

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

1231184128384 is a wasteful number, since it uses less digits than its factorization.

1231184128384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296171 (or 1296159 counting only the distinct ones).

The product of its digits is 294912, while the sum is 46.

The spelling of 1231184128384 in words is "one trillion, two hundred thirty-one billion, one hundred eighty-four million, one hundred twenty-eight thousand, three hundred eighty-four".