134165321 has 2 divisors, whose sum is σ = 134165322. Its totient is φ = 134165320.

The previous prime is 134165299. The next prime is 134165323. The reversal of 134165321 is 123561431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94789696 + 39375625 = 9736^2 + 6275^2 .

It is a cyclic number.

It is not a de Polignac number, because 134165321 - 2¹⁰ = 134164297 is a prime.

Together with 134165323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (134165323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67082660 + 67082661.

It is an arithmetic number, because the mean of its divisors is an integer number (67082661).

Almost surely, 2^134165321 is an apocalyptic number.

It is an amenable number.

134165321 is a deficient number, since it is larger than the sum of its proper divisors (1).

134165321 is an equidigital number, since it uses as much as digits as its factorization.

134165321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 134165321 is about 11582.9754812829. The cubic root of 134165321 is about 511.9333523782.

The spelling of 134165321 in words is "one hundred thirty-four million, one hundred sixty-five thousand, three hundred twenty-one".