1123203312311 has 8 divisors (see below), whose sum is σ = 1128988723200. Its totient is φ = 1117426950360.

The previous prime is 1123203312229. The next prime is 1123203312367. The reversal of 1123203312311 is 1132133023211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123203312311 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 (1123203312391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2013275 + ... + 2509916.

It is an arithmetic number, because the mean of its divisors is an integer number (141123590400).

Almost surely, 2^{1123203312311} is an apocalyptic number.

1123203312311 is a deficient number, since it is larger than the sum of its proper divisors (5785410889).

1123203312311 is a wasteful number, since it uses less digits than its factorization.

1123203312311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4524469.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1123203312311 its reverse (1132133023211), we get a palindrome (2255336335522).

The spelling of 1123203312311 in words is "one trillion, one hundred twenty-three billion, two hundred three million, three hundred twelve thousand, three hundred eleven".