11531011341321 has 16 divisors (see below), whose sum is σ = 17187783328320. Its totient is φ = 7640179290720.

The previous prime is 11531011341313. The next prime is 11531011341323. The reversal of 11531011341321 is 12314311013511.

It is a happy number.

11531011341321 is a `hidden beast` number, since 1 + 1 + 5 + 310 + 1 + 1 + 341 + 3 + 2 + 1 = 666.

It is not a de Polignac number, because 11531011341321 - 2³ = 11531011341313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11531011341323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1310040060 + ... + 1310048861.

It is an arithmetic number, because the mean of its divisors is an integer number (1074236458020).

Almost surely, 2^{11531011341321} is an apocalyptic number.

It is an amenable number.

11531011341321 is a deficient number, since it is larger than the sum of its proper divisors (5656771986999).

11531011341321 is a wasteful number, since it uses less digits than its factorization.

11531011341321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620089093 (or 2620089087 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

Adding to 11531011341321 its reverse (12314311013511), we get a palindrome (23845322354832).

The spelling of 11531011341321 in words is "eleven trillion, five hundred thirty-one billion, eleven million, three hundred forty-one thousand, three hundred twenty-one".