136215193 has 2 divisors, whose sum is σ = 136215194. Its totient is φ = 136215192.

The previous prime is 136215181. The next prime is 136215227. The reversal of 136215193 is 391512631.

It is a happy number.

136215193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122943744 + 13271449 = 11088^2 + 3643^2 .

It is a cyclic number.

It is not a de Polignac number, because 136215193 - 2²¹ = 134118041 is a prime.

It is not a weakly prime, because it can be changed into another prime (136215493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68107596 + 68107597.

It is an arithmetic number, because the mean of its divisors is an integer number (68107597).

Almost surely, 2^136215193 is an apocalyptic number.

It is an amenable number.

136215193 is a deficient number, since it is larger than the sum of its proper divisors (1).

136215193 is an equidigital number, since it uses as much as digits as its factorization.

136215193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 31.

The square root of 136215193 is about 11671.1264666269. The cubic root of 136215193 is about 514.5274113743.

The spelling of 136215193 in words is "one hundred thirty-six million, two hundred fifteen thousand, one hundred ninety-three".