1131311233312 has 192 divisors, whose sum is σ = 2528238182400. Its totient is φ = 494711193600.

The previous prime is 1131311233271. The next prime is 1131311233313. The reversal of 1131311233312 is 2133321131311.

It is not an unprimeable number, because it can be changed into a prime (1131311233313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175421064 + ... + 175427512.

It is an arithmetic number, because the mean of its divisors is an integer number (13167907200).

Almost surely, 2^{1131311233312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131311233312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1264119091200).

1131311233312 is an abundant number, since it is smaller than the sum of its proper divisors (1396926949088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131311233312 is a wasteful number, since it uses less digits than its factorization.

1131311233312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6787 (or 6779 counting only the distinct ones).

The product of its digits is 972, while the sum is 25.

Adding to 1131311233312 its reverse (2133321131311), we get a palindrome (3264632364623).

The spelling of 1131311233312 in words is "one trillion, one hundred thirty-one billion, three hundred eleven million, two hundred thirty-three thousand, three hundred twelve".