11321141204431 has 4 divisors (see below), whose sum is σ = 11321151043864. Its totient is φ = 11321131365000.

The previous prime is 11321141204423. The next prime is 11321141204447. The reversal of 11321141204431 is 13440214112311.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11321141204431 - 2³ = 11321141204423 is a prime.

It is a super-2 number, since 2×11321141204431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11321141204431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321141204411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2923965 + ... + 5584966.

It is an arithmetic number, because the mean of its divisors is an integer number (2830287760966).

Almost surely, 2^{11321141204431} is an apocalyptic number.

11321141204431 is a deficient number, since it is larger than the sum of its proper divisors (9839433).

11321141204431 is an equidigital number, since it uses as much as digits as its factorization.

11321141204431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9839432.

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 11321141204431 its reverse (13440214112311), we get a palindrome (24761355316742).

The spelling of 11321141204431 in words is "eleven trillion, three hundred twenty-one billion, one hundred forty-one million, two hundred four thousand, four hundred thirty-one".