128141311 has 4 divisors (see below), whose sum is σ = 128163952. Its totient is φ = 128118672.

The previous prime is 128141281. The next prime is 128141347. The reversal of 128141311 is 113141821.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 128141311 - 2⁷ = 128141183 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 (128171311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5611 + ... + 16963.

It is an arithmetic number, because the mean of its divisors is an integer number (32040988).

Almost surely, 2^128141311 is an apocalyptic number.

128141311 is a deficient number, since it is larger than the sum of its proper divisors (22641).

128141311 is a wasteful number, since it uses less digits than its factorization.

128141311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22640.

The product of its digits is 192, while the sum is 22.

The square root of 128141311 is about 11319.9518991911. The cubic root of 128141311 is about 504.1538108175.

It can be divided in two parts, 1281413 and 11, that added together give a square (1281424 = 1132²).

The spelling of 128141311 in words is "one hundred twenty-eight million, one hundred forty-one thousand, three hundred eleven".