213134069 has 2 divisors, whose sum is σ = 213134070. Its totient is φ = 213134068.

The previous prime is 213134057. The next prime is 213134071. The reversal of 213134069 is 960431312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110355025 + 102779044 = 10505^2 + 10138^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213134069 is a prime.

It is a super-2 number, since 2×213134069² = 90852262736993522, which contains 22 as substring.

Together with 213134071, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_11765036 and since 213134069 and 11765036 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213134029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106567034 + 106567035.

It is an arithmetic number, because the mean of its divisors is an integer number (106567035).

Almost surely, 2^213134069 is an apocalyptic number.

It is an amenable number.

213134069 is a deficient number, since it is larger than the sum of its proper divisors (1).

213134069 is an equidigital number, since it uses as much as digits as its factorization.

213134069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 213134069 is about 14599.1119250453. Note that the first 3 decimals coincide. The cubic root of 213134069 is about 597.3345365608.

The spelling of 213134069 in words is "two hundred thirteen million, one hundred thirty-four thousand, sixty-nine".