128702323 has 2 divisors, whose sum is σ = 128702324. Its totient is φ = 128702322.

The previous prime is 128702293. The next prime is 128702341. The reversal of 128702323 is 323207821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128702323 - 2²⁵ = 95147891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128702291 and 128702300.

It is not a weakly prime, because it can be changed into another prime (128702383) 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 as a sum of consecutive naturals, namely, 64351161 + 64351162.

It is an arithmetic number, because the mean of its divisors is an integer number (64351162).

Almost surely, 2^128702323 is an apocalyptic number.

128702323 is a deficient number, since it is larger than the sum of its proper divisors (1).

128702323 is an equidigital number, since it uses as much as digits as its factorization.

128702323 is an odious number, because the sum of its binary digits is odd.

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

The square root of 128702323 is about 11344.7046237441. The cubic root of 128702323 is about 504.8884804234. Note that the first 3 decimals are identical.

The spelling of 128702323 in words is "one hundred twenty-eight million, seven hundred two thousand, three hundred twenty-three".