128307373 has 2 divisors, whose sum is σ = 128307374. Its totient is φ = 128307372.

The previous prime is 128307367. The next prime is 128307401. The reversal of 128307373 is 373703821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118309129 + 9998244 = 10877^2 + 3162^2 .

It is a cyclic number.

It is not a de Polignac number, because 128307373 - 2⁵ = 128307341 is a prime.

It is a super-2 number, since 2×128307373² = 32925563932322258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128307173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64153686 + 64153687.

It is an arithmetic number, because the mean of its divisors is an integer number (64153687).

Almost surely, 2^128307373 is an apocalyptic number.

It is an amenable number.

128307373 is a deficient number, since it is larger than the sum of its proper divisors (1).

128307373 is an equidigital number, since it uses as much as digits as its factorization.

128307373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 128307373 is about 11327.2844495051. The cubic root of 128307373 is about 504.3714992691.

The spelling of 128307373 in words is "one hundred twenty-eight million, three hundred seven thousand, three hundred seventy-three".