134243211313 has 4 divisors (see below), whose sum is σ = 142139870820. Its totient is φ = 126346551808.

The previous prime is 134243211281. The next prime is 134243211317. The reversal of 134243211313 is 313112342431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313112342431 = 7 ⋅44730334633.

It can be written as a sum of positive squares in 2 ways, for example, as 41433416704 + 92809794609 = 203552^2 + 304647^2 .

It is a cyclic number.

It is not a de Polignac number, because 134243211313 - 2⁵ = 134243211281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134243211317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3948329728 + ... + 3948329761.

It is an arithmetic number, because the mean of its divisors is an integer number (35534967705).

Almost surely, 2^134243211313 is an apocalyptic number.

It is an amenable number.

134243211313 is a deficient number, since it is larger than the sum of its proper divisors (7896659507).

134243211313 is an equidigital number, since it uses as much as digits as its factorization.

134243211313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7896659506.

The product of its digits is 5184, while the sum is 28.

Adding to 134243211313 its reverse (313112342431), we get a palindrome (447355553744).

The spelling of 134243211313 in words is "one hundred thirty-four billion, two hundred forty-three million, two hundred eleven thousand, three hundred thirteen".