135315061 has 4 divisors (see below), whose sum is σ = 154645792. Its totient is φ = 115984332.

The previous prime is 135315029. The next prime is 135315067. The reversal of 135315061 is 160513531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 160513531 = 3851 ⋅41681.

It is a cyclic number.

It is not a de Polignac number, because 135315061 - 2⁵ = 135315029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135315067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9665355 + ... + 9665368.

It is an arithmetic number, because the mean of its divisors is an integer number (38661448).

Almost surely, 2^135315061 is an apocalyptic number.

It is an amenable number.

135315061 is a deficient number, since it is larger than the sum of its proper divisors (19330731).

135315061 is an equidigital number, since it uses as much as digits as its factorization.

135315061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19330730.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 135315061 is about 11632.5002041694. The cubic root of 135315061 is about 513.3915456089.

Adding to 135315061 its reverse (160513531), we get a palindrome (295828592).

The spelling of 135315061 in words is "one hundred thirty-five million, three hundred fifteen thousand, sixty-one".