135612313 has 2 divisors, whose sum is σ = 135612314. Its totient is φ = 135612312.

The previous prime is 135612307. The next prime is 135612341. The reversal of 135612313 is 313216531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128867904 + 6744409 = 11352^2 + 2597^2 .

It is an emirp because it is prime and its reverse (313216531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135612313 - 2²⁵ = 102057881 is a prime.

It is not a weakly prime, because it can be changed into another prime (135612713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67806156 + 67806157.

It is an arithmetic number, because the mean of its divisors is an integer number (67806157).

Almost surely, 2^135612313 is an apocalyptic number.

It is an amenable number.

135612313 is a deficient number, since it is larger than the sum of its proper divisors (1).

135612313 is an equidigital number, since it uses as much as digits as its factorization.

135612313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 25.

The square root of 135612313 is about 11645.2699839892. The cubic root of 135612313 is about 513.7671999104.

Adding to 135612313 its reverse (313216531), we get a palindrome (448828844).

The spelling of 135612313 in words is "one hundred thirty-five million, six hundred twelve thousand, three hundred thirteen".