1131343421636 has 12 divisors (see below), whose sum is σ = 1980606386220. Its totient is φ = 565455882720.

The previous prime is 1131343421623. The next prime is 1131343421687. The reversal of 1131343421636 is 6361243431311.

It can be written as a sum of positive squares in 2 ways, for example, as 677566044736 + 453777376900 = 823144^2 + 673630^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1131343421636.

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, 53945231 + ... + 53966198.

It is an arithmetic number, because the mean of its divisors is an integer number (165050532185).

Almost surely, 2^{1131343421636} is an apocalyptic number.

It is an amenable number.

1131343421636 is a deficient number, since it is larger than the sum of its proper divisors (849262964584).

1131343421636 is a wasteful number, since it uses less digits than its factorization.

1131343421636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107914054 (or 107914052 counting only the distinct ones).

The product of its digits is 93312, while the sum is 38.

Adding to 1131343421636 its reverse (6361243431311), we get a palindrome (7492586852947).

The spelling of 1131343421636 in words is "one trillion, one hundred thirty-one billion, three hundred forty-three million, four hundred twenty-one thousand, six hundred thirty-six".