1123231311011 has 16 divisors (see below), whose sum is σ = 1191898886400. Its totient is φ = 1056279389088.

The previous prime is 1123231310987. The next prime is 1123231311043. The reversal of 1123231311011 is 1101131323211.

It is a cyclic number.

It is not a de Polignac number, because 1123231311011 - 2⁶ = 1123231310947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123231311611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68360 + ... + 1500378.

It is an arithmetic number, because the mean of its divisors is an integer number (74493680400).

Almost surely, 2^{1123231311011} is an apocalyptic number.

1123231311011 is a deficient number, since it is larger than the sum of its proper divisors (68667575389).

1123231311011 is a wasteful number, since it uses less digits than its factorization.

1123231311011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432618.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1123231311011 its reverse (1101131323211), we get a palindrome (2224362634222).

The spelling of 1123231311011 in words is "one trillion, one hundred twenty-three billion, two hundred thirty-one million, three hundred eleven thousand, eleven".