136138313 has 2 divisors, whose sum is σ = 136138314. Its totient is φ = 136138312.

The previous prime is 136138309. The next prime is 136138319. The reversal of 136138313 is 313831631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126945289 + 9193024 = 11267^2 + 3032^2 .

It is a cyclic number.

It is not a de Polignac number, because 136138313 - 2² = 136138309 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136138319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68069156 + 68069157.

It is an arithmetic number, because the mean of its divisors is an integer number (68069157).

Almost surely, 2^136138313 is an apocalyptic number.

It is an amenable number.

136138313 is a deficient number, since it is larger than the sum of its proper divisors (1).

136138313 is an equidigital number, since it uses as much as digits as its factorization.

136138313 is an evil number, because the sum of its binary digits is even.

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

The square root of 136138313 is about 11667.8324036644. The cubic root of 136138313 is about 514.4305932176.

Adding to 136138313 its reverse (313831631), we get a palindrome (449969944).

The spelling of 136138313 in words is "one hundred thirty-six million, one hundred thirty-eight thousand, three hundred thirteen".