128135323 has 8 divisors (see below), whose sum is σ = 134052768. Its totient is φ = 122246784.

The previous prime is 128135303. The next prime is 128135327. The reversal of 128135323 is 323531821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128135323 is a prime.

It is a super-2 number, since 2×128135323² = 32837322000628658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128135291 and 128135300.

It is not an unprimeable number, because it can be changed into a prime (128135327) 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, 2115 + ... + 16147.

It is an arithmetic number, because the mean of its divisors is an integer number (16756596).

Almost surely, 2^128135323 is an apocalyptic number.

128135323 is a deficient number, since it is larger than the sum of its proper divisors (5917445).

128135323 is a wasteful number, since it uses less digits than its factorization.

128135323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14453.

The product of its digits is 4320, while the sum is 28.

The square root of 128135323 is about 11319.6874073448. The cubic root of 128135323 is about 504.1459577163.

The spelling of 128135323 in words is "one hundred twenty-eight million, one hundred thirty-five thousand, three hundred twenty-three".