135087313 has 2 divisors, whose sum is σ = 135087314. Its totient is φ = 135087312.

The previous prime is 135087311. The next prime is 135087347. The reversal of 135087313 is 313780531.

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., 103367889 + 31719424 = 10167^2 + 5632^2 .

It is a cyclic number.

It is not a de Polignac number, because 135087313 - 2¹ = 135087311 is a prime.

Together with 135087311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (135087311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67543656 + 67543657.

It is an arithmetic number, because the mean of its divisors is an integer number (67543657).

Almost surely, 2^135087313 is an apocalyptic number.

It is an amenable number.

135087313 is a deficient number, since it is larger than the sum of its proper divisors (1).

135087313 is an equidigital number, since it uses as much as digits as its factorization.

135087313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 135087313 is about 11622.7067845661. The cubic root of 135087313 is about 513.1033550797.

The spelling of 135087313 in words is "one hundred thirty-five million, eighty-seven thousand, three hundred thirteen".