134213213 has 4 divisors (see below), whose sum is σ = 137486748. Its totient is φ = 130939680.

The previous prime is 134213111. The next prime is 134213231. The reversal of 134213213 is 312312431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312312431 = 127 ⋅2459153.

It can be written as a sum of positive squares in 2 ways, for example, as 58644964 + 75568249 = 7658^2 + 8693^2 .

It is a cyclic number.

It is not a de Polignac number, because 134213213 - 2¹⁶ = 134147677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134213273) 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, 1636706 + ... + 1636787.

It is an arithmetic number, because the mean of its divisors is an integer number (34371687).

Almost surely, 2^134213213 is an apocalyptic number.

It is an amenable number.

134213213 is a deficient number, since it is larger than the sum of its proper divisors (3273535).

134213213 is an equidigital number, since it uses as much as digits as its factorization.

134213213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3273534.

The product of its digits is 432, while the sum is 20.

The square root of 134213213 is about 11585.0426412681. The cubic root of 134213213 is about 511.9942588162.

Adding to 134213213 its reverse (312312431), we get a palindrome (446525644).

The spelling of 134213213 in words is "one hundred thirty-four million, two hundred thirteen thousand, two hundred thirteen".