128315323 has 2 divisors, whose sum is σ = 128315324. Its totient is φ = 128315322.

The previous prime is 128315309. The next prime is 128315351. The reversal of 128315323 is 323513821.

It is an a-pointer prime, because the next prime (128315351) can be obtained adding 128315323 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128315323 - 2²⁵ = 94760891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128315291 and 128315300.

It is not a weakly prime, because it can be changed into another prime (128315353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64157661 + 64157662.

It is an arithmetic number, because the mean of its divisors is an integer number (64157662).

Almost surely, 2^128315323 is an apocalyptic number.

128315323 is a deficient number, since it is larger than the sum of its proper divisors (1).

128315323 is an equidigital number, since it uses as much as digits as its factorization.

128315323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 28.

The square root of 128315323 is about 11327.6353666597. The cubic root of 128315323 is about 504.3819161052.

The spelling of 128315323 in words is "one hundred twenty-eight million, three hundred fifteen thousand, three hundred twenty-three".