128315023 has 2 divisors, whose sum is σ = 128315024. Its totient is φ = 128315022.

The previous prime is 128315017. The next prime is 128315071. The reversal of 128315023 is 320513821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128315023 - 2¹³ = 128306831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128315323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64157511 + 64157512.

It is an arithmetic number, because the mean of its divisors is an integer number (64157512).

Almost surely, 2^128315023 is an apocalyptic number.

128315023 is a deficient number, since it is larger than the sum of its proper divisors (1).

128315023 is an equidigital number, since it uses as much as digits as its factorization.

128315023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 128315023 is about 11327.6221247003. The cubic root of 128315023 is about 504.3815230248.

Adding to 128315023 its reverse (320513821), we get a palindrome (448828844).

The spelling of 128315023 in words is "one hundred twenty-eight million, three hundred fifteen thousand, twenty-three".