1123412031311 has 4 divisors (see below), whose sum is σ = 1129232819232. Its totient is φ = 1117591243392.

The previous prime is 1123412031307. The next prime is 1123412031331. The reversal of 1123412031311 is 1131302143211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1123412031311 - 2² = 1123412031307 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 (1123412031331) 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 3 ways as a sum of consecutive naturals, for example, 2910393671 + ... + 2910394056.

It is an arithmetic number, because the mean of its divisors is an integer number (282308204808).

Almost surely, 2^{1123412031311} is an apocalyptic number.

1123412031311 is a deficient number, since it is larger than the sum of its proper divisors (5820787921).

1123412031311 is an equidigital number, since it uses as much as digits as its factorization.

1123412031311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5820787920.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 1123412031311 its reverse (1131302143211), we get a palindrome (2254714174522).

The spelling of 1123412031311 in words is "one trillion, one hundred twenty-three billion, four hundred twelve million, thirty-one thousand, three hundred eleven".