213134065 has 8 divisors (see below), whose sum is σ = 256448808. Its totient is φ = 170048640.

The previous prime is 213134057. The next prime is 213134069. The reversal of 213134065 is 560431312.

213134065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 33547264 + 179586801 = 5792^2 + 13401^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213134065 - 2³ = 213134057 is a prime.

It is a super-2 number, since 2×213134065² = 90852259326848450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213134069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55276 + ... + 59005.

It is an arithmetic number, because the mean of its divisors is an integer number (32056101).

Almost surely, 2^213134065 is an apocalyptic number.

It is an amenable number.

213134065 is a deficient number, since it is larger than the sum of its proper divisors (43314743).

213134065 is a wasteful number, since it uses less digits than its factorization.

213134065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114659.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 213134065 is about 14599.1117880507. Note that the first 3 decimals coincide. The cubic root of 213134065 is about 597.3345328240.

Adding to 213134065 its reverse (560431312), we get a palindrome (773565377).

The spelling of 213134065 in words is "two hundred thirteen million, one hundred thirty-four thousand, sixty-five".