128430307 has 2 divisors, whose sum is σ = 128430308. Its totient is φ = 128430306.

The previous prime is 128430271. The next prime is 128430347. The reversal of 128430307 is 703034821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128430307 - 2¹¹ = 128428259 is a prime.

It is a super-3 number, since 3×128430307³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is equal to p_7294033 and since 128430307 and 7294033 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (128430347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64215153 + 64215154.

It is an arithmetic number, because the mean of its divisors is an integer number (64215154).

Almost surely, 2^128430307 is an apocalyptic number.

128430307 is a deficient number, since it is larger than the sum of its proper divisors (1).

128430307 is an equidigital number, since it uses as much as digits as its factorization.

128430307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 128430307 is about 11332.7096053856. The cubic root of 128430307 is about 504.5325308409.

The spelling of 128430307 in words is "one hundred twenty-eight million, four hundred thirty thousand, three hundred seven".