128697383 has 2 divisors, whose sum is σ = 128697384. Its totient is φ = 128697382.

The previous prime is 128697329. The next prime is 128697403. The reversal of 128697383 is 383796821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128697383 - 2¹⁴ = 128680999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128697683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64348691 + 64348692.

It is an arithmetic number, because the mean of its divisors is an integer number (64348692).

Almost surely, 2^128697383 is an apocalyptic number.

128697383 is a deficient number, since it is larger than the sum of its proper divisors (1).

128697383 is an equidigital number, since it uses as much as digits as its factorization.

128697383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 47.

The square root of 128697383 is about 11344.4868989302. The cubic root of 128697383 is about 504.8820206047.

The spelling of 128697383 in words is "one hundred twenty-eight million, six hundred ninety-seven thousand, three hundred eighty-three".