1131022232231 has 4 divisors (see below), whose sum is σ = 1197552951792. Its totient is φ = 1064491512672.

The previous prime is 1131022232189. The next prime is 1131022232257. The reversal of 1131022232231 is 1322322201311.

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 1131022232231 - 2¹⁸ = 1131021970087 is a prime.

It is a super-2 number, since 2×1131022232231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131022232197 and 1131022232206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131022232281) 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, 33265359755 + ... + 33265359788.

It is an arithmetic number, because the mean of its divisors is an integer number (299388237948).

Almost surely, 2^{1131022232231} is an apocalyptic number.

1131022232231 is a deficient number, since it is larger than the sum of its proper divisors (66530719561).

1131022232231 is an equidigital number, since it uses as much as digits as its factorization.

1131022232231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66530719560.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1131022232231 its reverse (1322322201311), we get a palindrome (2453344433542).

The spelling of 1131022232231 in words is "one trillion, one hundred thirty-one billion, twenty-two million, two hundred thirty-two thousand, two hundred thirty-one".