134043123213 has 28 divisors (see below), whose sum is σ = 201062312220. Its totient is φ = 89322258816.

The previous prime is 134043123211. The next prime is 134043123367. The reversal of 134043123213 is 312321340431.

It is a happy number.

134043123213 is a `hidden beast` number, since 1 + 340 + 4 + 312 + 3 + 2 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 81509108004 + 52534015209 = 285498^2 + 229203^2 .

It is not a de Polignac number, because 134043123213 - 2¹ = 134043123211 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134043123211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1643445 + ... + 1723077.

It is an arithmetic number, because the mean of its divisors is an integer number (7180796865).

Almost surely, 2^134043123213 is an apocalyptic number.

It is an amenable number.

134043123213 is a deficient number, since it is larger than the sum of its proper divisors (67019189007).

134043123213 is an frugal number, since it uses more digits than its factorization.

134043123213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81960 (or 81945 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 134043123213 its reverse (312321340431), we get a palindrome (446364463644).

The spelling of 134043123213 in words is "one hundred thirty-four billion, forty-three million, one hundred twenty-three thousand, two hundred thirteen".