135312061 has 8 divisors (see below), whose sum is σ = 145411200. Its totient is φ = 125450688.

The previous prime is 135312049. The next prime is 135312077. The reversal of 135312061 is 160213531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135312061 - 2⁵ = 135312029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135312031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58261 + ... + 60538.

It is an arithmetic number, because the mean of its divisors is an integer number (18176400).

Almost surely, 2^135312061 is an apocalyptic number.

It is an amenable number.

135312061 is a deficient number, since it is larger than the sum of its proper divisors (10099139).

135312061 is a wasteful number, since it uses less digits than its factorization.

135312061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118883.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 135312061 is about 11632.3712543918. The cubic root of 135312061 is about 513.3877515350.

Adding to 135312061 its reverse (160213531), we get a palindrome (295525592).

The spelling of 135312061 in words is "one hundred thirty-five million, three hundred twelve thousand, sixty-one".