11311012021331 has 8 divisors (see below), whose sum is σ = 12351161971200. Its totient is φ = 10272841426440.

The previous prime is 11311012021313. The next prime is 11311012021343. The reversal of 11311012021331 is 13312021011311.

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

It is a cyclic number.

It is not a de Polignac number, because 11311012021331 - 2¹⁰ = 11311012020307 is a prime.

It is a super-2 number, since 2×11311012021331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11311012021931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494826791 + ... + 494849648.

It is an arithmetic number, because the mean of its divisors is an integer number (1543895246400).

Almost surely, 2^{11311012021331} is an apocalyptic number.

11311012021331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11311012021331 is a deficient number, since it is larger than the sum of its proper divisors (1040149949869).

11311012021331 is a wasteful number, since it uses less digits than its factorization.

11311012021331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989677489.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 11311012021331 its reverse (13312021011311), we get a palindrome (24623033032642).

The spelling of 11311012021331 in words is "eleven trillion, three hundred eleven billion, twelve million, twenty-one thousand, three hundred thirty-one".