1213134430113 has 20 divisors (see below), whose sum is σ = 1812316121748. Its totient is φ = 808710337440.

The previous prime is 1213134430111. The next prime is 1213134430171. The reversal of 1213134430113 is 3110344313121.

1213134430113 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 1 + 344 + 301 + 13 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 675072570384 + 538061859729 = 821628^2 + 733527^2 .

It is not a de Polignac number, because 1213134430113 - 2¹ = 1213134430111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1213134430111) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1039995 + ... + 1872927.

Almost surely, 2^{1213134430113} is an apocalyptic number.

It is an amenable number.

1213134430113 is a deficient number, since it is larger than the sum of its proper divisors (599181691635).

1213134430113 is an equidigital number, since it uses as much as digits as its factorization.

1213134430113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850926 (or 850917 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 1213134430113 its reverse (3110344313121), we get a palindrome (4323478743234).

The spelling of 1213134430113 in words is "one trillion, two hundred thirteen billion, one hundred thirty-four million, four hundred thirty thousand, one hundred thirteen".