128323151 has 4 divisors (see below), whose sum is σ = 139988904. Its totient is φ = 116657400.

The previous prime is 128323147. The next prime is 128323183. The reversal of 128323151 is 151323821.

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 128323151 - 2² = 128323147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128323151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128023151) 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, 5832860 + ... + 5832881.

It is an arithmetic number, because the mean of its divisors is an integer number (34997226).

Almost surely, 2^128323151 is an apocalyptic number.

128323151 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

128323151 is a deficient number, since it is larger than the sum of its proper divisors (11665753).

128323151 is a wasteful number, since it uses less digits than its factorization.

128323151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11665752.

The product of its digits is 1440, while the sum is 26.

The square root of 128323151 is about 11327.9808880488. The cubic root of 128323151 is about 504.3921726650.

Adding to 128323151 its reverse (151323821), we get a palindrome (279646972).

The spelling of 128323151 in words is "one hundred twenty-eight million, three hundred twenty-three thousand, one hundred fifty-one".