1111032311231 has 4 divisors (see below), whose sum is σ = 1112683177152. Its totient is φ = 1109381445312.

The previous prime is 1111032311201. The next prime is 1111032311239. The reversal of 1111032311231 is 1321132301111.

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 1111032311231 - 2¹⁰ = 1111032310207 is a prime.

It is a super-2 number, since 2×1111032311231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111032311239) 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, 825431951 + ... + 825433296.

It is an arithmetic number, because the mean of its divisors is an integer number (278170794288).

Almost surely, 2^{1111032311231} is an apocalyptic number.

1111032311231 is a deficient number, since it is larger than the sum of its proper divisors (1650865921).

1111032311231 is an equidigital number, since it uses as much as digits as its factorization.

1111032311231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650865920.

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

Adding to 1111032311231 its reverse (1321132301111), we get a palindrome (2432164612342).

The spelling of 1111032311231 in words is "one trillion, one hundred eleven billion, thirty-two million, three hundred eleven thousand, two hundred thirty-one".