11331321331 has 8 divisors (see below), whose sum is σ = 12662940528. Its totient is φ = 10049952000.

The previous prime is 11331321329. The next prime is 11331321359. The reversal of 11331321331 is 13312313311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11331321331 - 2¹ = 11331321329 is a prime.

It is a super-2 number, since 2×11331321331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11331321301) 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, 12561990 + ... + 12562891.

It is an arithmetic number, because the mean of its divisors is an integer number (1582867566).

Almost surely, 2^11331321331 is an apocalyptic number.

11331321331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11331321331 is a deficient number, since it is larger than the sum of its proper divisors (1331619197).

11331321331 is a wasteful number, since it uses less digits than its factorization.

11331321331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25124933.

The product of its digits is 486, while the sum is 22.

Adding to 11331321331 its reverse (13312313311), we get a palindrome (24643634642).

The spelling of 11331321331 in words is "eleven billion, three hundred thirty-one million, three hundred twenty-one thousand, three hundred thirty-one".