128481923 has 2 divisors, whose sum is σ = 128481924. Its totient is φ = 128481922.

The previous prime is 128481917. The next prime is 128481931. The reversal of 128481923 is 329184821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128481923 - 2¹² = 128477827 is a prime.

It is not a weakly prime, because it can be changed into another prime (128481323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64240961 + 64240962.

It is an arithmetic number, because the mean of its divisors is an integer number (64240962).

Almost surely, 2^128481923 is an apocalyptic number.

128481923 is a deficient number, since it is larger than the sum of its proper divisors (1).

128481923 is an equidigital number, since it uses as much as digits as its factorization.

128481923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 38.

The square root of 128481923 is about 11334.9866784218. The cubic root of 128481923 is about 504.6001121457.

The spelling of 128481923 in words is "one hundred twenty-eight million, four hundred eighty-one thousand, nine hundred twenty-three".