136456213 has 2 divisors, whose sum is σ = 136456214. Its totient is φ = 136456212.

The previous prime is 136456193. The next prime is 136456219. The reversal of 136456213 is 312654631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135070884 + 1385329 = 11622^2 + 1177^2 .

It is an emirp because it is prime and its reverse (312654631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136456213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136456219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68228106 + 68228107.

It is an arithmetic number, because the mean of its divisors is an integer number (68228107).

Almost surely, 2^136456213 is an apocalyptic number.

It is an amenable number.

136456213 is a deficient number, since it is larger than the sum of its proper divisors (1).

136456213 is an equidigital number, since it uses as much as digits as its factorization.

136456213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 31.

The square root of 136456213 is about 11681.4473846352. The cubic root of 136456213 is about 514.8307018849.

The spelling of 136456213 in words is "one hundred thirty-six million, four hundred fifty-six thousand, two hundred thirteen".