128347283 has 4 divisors (see below), whose sum is σ = 128384448. Its totient is φ = 128310120.

The previous prime is 128347279. The next prime is 128347309. The reversal of 128347283 is 382743821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 382743821 = 643 ⋅595247.

It is a cyclic number.

It is not a de Polignac number, because 128347283 - 2² = 128347279 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128347253) 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, 12803 + ... + 20508.

It is an arithmetic number, because the mean of its divisors is an integer number (32096112).

Almost surely, 2^128347283 is an apocalyptic number.

128347283 is a deficient number, since it is larger than the sum of its proper divisors (37165).

128347283 is an equidigital number, since it uses as much as digits as its factorization.

128347283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37164.

The product of its digits is 64512, while the sum is 38.

The square root of 128347283 is about 11329.0459880786. The cubic root of 128347283 is about 504.4237887553.

The spelling of 128347283 in words is "one hundred twenty-eight million, three hundred forty-seven thousand, two hundred eighty-three".