136072213 has 2 divisors, whose sum is σ = 136072214. Its totient is φ = 136072212.

The previous prime is 136072201. The next prime is 136072229. The reversal of 136072213 is 312270631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127644804 + 8427409 = 11298^2 + 2903^2 .

It is an emirp because it is prime and its reverse (312270631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136072213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136072513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68036106 + 68036107.

It is an arithmetic number, because the mean of its divisors is an integer number (68036107).

Almost surely, 2^136072213 is an apocalyptic number.

It is an amenable number.

136072213 is a deficient number, since it is larger than the sum of its proper divisors (1).

136072213 is an equidigital number, since it uses as much as digits as its factorization.

136072213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 136072213 is about 11664.9994856408. Note that the first 3 decimals coincide. The cubic root of 136072213 is about 514.3473216136.

The spelling of 136072213 in words is "one hundred thirty-six million, seventy-two thousand, two hundred thirteen".