135312647 has 4 divisors (see below), whose sum is σ = 135345840. Its totient is φ = 135279456.

The previous prime is 135312643. The next prime is 135312677. The reversal of 135312647 is 746213531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135312647 - 2² = 135312643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135312643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9458 + ... + 18975.

It is an arithmetic number, because the mean of its divisors is an integer number (33836460).

Almost surely, 2^135312647 is an apocalyptic number.

135312647 is a deficient number, since it is larger than the sum of its proper divisors (33193).

135312647 is an equidigital number, since it uses as much as digits as its factorization.

135312647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33192.

The product of its digits is 15120, while the sum is 32.

The square root of 135312647 is about 11632.3964426940. The cubic root of 135312647 is about 513.3884926485.

The spelling of 135312647 in words is "one hundred thirty-five million, three hundred twelve thousand, six hundred forty-seven".