1133231321231 has 4 divisors (see below), whose sum is σ = 1192875075000. Its totient is φ = 1073587567464.

The previous prime is 1133231321227. The next prime is 1133231321267. The reversal of 1133231321231 is 1321231323311.

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 1133231321231 - 2² = 1133231321227 is a prime.

It is a super-2 number, since 2×1133231321231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1133231321231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133231371231) 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, 29821876856 + ... + 29821876893.

It is an arithmetic number, because the mean of its divisors is an integer number (298218768750).

Almost surely, 2^{1133231321231} is an apocalyptic number.

1133231321231 is a deficient number, since it is larger than the sum of its proper divisors (59643753769).

1133231321231 is an equidigital number, since it uses as much as digits as its factorization.

1133231321231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59643753768.

The product of its digits is 1944, while the sum is 26.

Adding to 1133231321231 its reverse (1321231323311), we get a palindrome (2454462644542).

The spelling of 1133231321231 in words is "one trillion, one hundred thirty-three billion, two hundred thirty-one million, three hundred twenty-one thousand, two hundred thirty-one".