1131342431312 has 20 divisors (see below), whose sum is σ = 2193334954260. Its totient is φ = 565320507648.

The previous prime is 1131342431281. The next prime is 1131342431321. The reversal of 1131342431312 is 2131342431311.

It can be written as a sum of positive squares in 2 ways, for example, as 290042565136 + 841299866176 = 538556^2 + 917224^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21892637 + ... + 21944252.

It is an arithmetic number, because the mean of its divisors is an integer number (109666747713).

Almost surely, 2^{1131342431312} is an apocalyptic number.

It is an amenable number.

1131342431312 is a deficient number, since it is larger than the sum of its proper divisors (1061992522948).

1131342431312 is a wasteful number, since it uses less digits than its factorization.

1131342431312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43838510 (or 43838504 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

Adding to 1131342431312 its reverse (2131342431311), we get a palindrome (3262684862623).

Subtracting 1131342431312 from its reverse (2131342431311), we obtain a palindrome (999999999999).

The spelling of 1131342431312 in words is "one trillion, one hundred thirty-one billion, three hundred forty-two million, four hundred thirty-one thousand, three hundred twelve".