128473331 has 16 divisors (see below), whose sum is σ = 158158848. Its totient is φ = 101930400.

The previous prime is 128473321. The next prime is 128473333. The reversal of 128473331 is 133374821.

It is a cyclic number.

It is not a de Polignac number, because 128473331 - 2²⁶ = 61364467 is a prime.

It is a super-2 number, since 2×128473331² = 33010793556471122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128473333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7880 + ... + 17861.

It is an arithmetic number, because the mean of its divisors is an integer number (9884928).

Almost surely, 2^128473331 is an apocalyptic number.

128473331 is a deficient number, since it is larger than the sum of its proper divisors (29685517).

128473331 is a wasteful number, since it uses less digits than its factorization.

128473331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25802.

The product of its digits is 12096, while the sum is 32.

The square root of 128473331 is about 11334.6076685521. The cubic root of 128473331 is about 504.5888638167.

The spelling of 128473331 in words is "one hundred twenty-eight million, four hundred seventy-three thousand, three hundred thirty-one".