1113122311231 has 4 divisors (see below), whose sum is σ = 1272139784272. Its totient is φ = 954104838192.

The previous prime is 1113122311207. The next prime is 1113122311237. The reversal of 1113122311231 is 1321132213111.

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 1113122311231 - 2¹⁹ = 1113121786943 is a prime.

It is a super-2 number, since 2×1113122311231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113122311237) 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, 79508736510 + ... + 79508736523.

It is an arithmetic number, because the mean of its divisors is an integer number (318034946068).

Almost surely, 2^{1113122311231} is an apocalyptic number.

1113122311231 is a deficient number, since it is larger than the sum of its proper divisors (159017473041).

1113122311231 is an equidigital number, since it uses as much as digits as its factorization.

1113122311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159017473040.

The product of its digits is 216, while the sum is 22.

Adding to 1113122311231 its reverse (1321132213111), we get a palindrome (2434254524342).

The spelling of 1113122311231 in words is "one trillion, one hundred thirteen billion, one hundred twenty-two million, three hundred eleven thousand, two hundred thirty-one".