134121313 has 4 divisors (see below), whose sum is σ = 142010820. Its totient is φ = 126231808.

The previous prime is 134121311. The next prime is 134121329. The reversal of 134121313 is 313121431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 115605504 + 18515809 = 10752^2 + 4303^2 .

It is a cyclic number.

It is not a de Polignac number, because 134121313 - 2¹ = 134121311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134121311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3944728 + ... + 3944761.

It is an arithmetic number, because the mean of its divisors is an integer number (35502705).

Almost surely, 2^134121313 is an apocalyptic number.

It is an amenable number.

134121313 is a deficient number, since it is larger than the sum of its proper divisors (7889507).

134121313 is an equidigital number, since it uses as much as digits as its factorization.

134121313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7889506.

The product of its digits is 216, while the sum is 19.

The square root of 134121313 is about 11581.0756408893. The cubic root of 134121313 is about 511.8773726200.

Adding to 134121313 its reverse (313121431), we get a palindrome (447242744).

The spelling of 134121313 in words is "one hundred thirty-four million, one hundred twenty-one thousand, three hundred thirteen".