1115400321311 has 8 divisors (see below), whose sum is σ = 1188967699200. Its totient is φ = 1043319153240.

The previous prime is 1115400321307. The next prime is 1115400321379. The reversal of 1115400321311 is 1131230045111.

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

It is not a de Polignac number, because 1115400321311 - 2² = 1115400321307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115400327311) 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, 371550905 + ... + 371553906.

It is an arithmetic number, because the mean of its divisors is an integer number (148620962400).

Almost surely, 2^{1115400321311} is an apocalyptic number.

1115400321311 is a deficient number, since it is larger than the sum of its proper divisors (73567377889).

1115400321311 is an equidigital number, since it uses as much as digits as its factorization.

1115400321311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743104909.

The product of its (nonzero) digits is 360, while the sum is 23.

Adding to 1115400321311 its reverse (1131230045111), we get a palindrome (2246630366422).

The spelling of 1115400321311 in words is "one trillion, one hundred fifteen billion, four hundred million, three hundred twenty-one thousand, three hundred eleven".