128208023 has 2 divisors, whose sum is σ = 128208024. Its totient is φ = 128208022.

The previous prime is 128208013. The next prime is 128208053. The reversal of 128208023 is 320802821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128208023 - 2²² = 124013719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128207983 and 128208001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128208013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64104011 + 64104012.

It is an arithmetic number, because the mean of its divisors is an integer number (64104012).

Almost surely, 2^128208023 is an apocalyptic number.

128208023 is a deficient number, since it is larger than the sum of its proper divisors (1).

128208023 is an equidigital number, since it uses as much as digits as its factorization.

128208023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 128208023 is about 11322.8981714047. The cubic root of 128208023 is about 504.2412852727.

The spelling of 128208023 in words is "one hundred twenty-eight million, two hundred eight thousand, twenty-three".