11331131121328 has 40 divisors (see below), whose sum is σ = 23245856513712. Its totient is φ = 5332211140608.

The previous prime is 11331131121227. The next prime is 11331131121329. The reversal of 11331131121328 is 82312113113311.

It is a self number, because there is not a number n which added to its sum of digits gives 11331131121328.

It is not an unprimeable number, because it can be changed into a prime (11331131121329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18537151 + ... + 19138657.

Almost surely, 2^{11331131121328} is an apocalyptic number.

It is an amenable number.

11331131121328 is an abundant number, since it is smaller than the sum of its proper divisors (11914725392384).

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

11331131121328 is a wasteful number, since it uses less digits than its factorization.

11331131121328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670789 (or 670783 counting only the distinct ones).

The product of its digits is 2592, while the sum is 31.

Adding to 11331131121328 its reverse (82312113113311), we get a palindrome (93643244234639).

The spelling of 11331131121328 in words is "eleven trillion, three hundred thirty-one billion, one hundred thirty-one million, one hundred twenty-one thousand, three hundred twenty-eight".