128231603 has 8 divisors (see below), whose sum is σ = 133931760. Its totient is φ = 122649120.

The previous prime is 128231599. The next prime is 128231617. The reversal of 128231603 is 306132821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128231603 - 2² = 128231599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128231683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27188 + ... + 31553.

It is an arithmetic number, because the mean of its divisors is an integer number (16741470).

Almost surely, 2^128231603 is an apocalyptic number.

128231603 is a deficient number, since it is larger than the sum of its proper divisors (5700157).

128231603 is an equidigital number, since it uses as much as digits as its factorization.

128231603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58837.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 128231603 is about 11323.9393763831. The cubic root of 128231603 is about 504.2721967044.

The spelling of 128231603 in words is "one hundred twenty-eight million, two hundred thirty-one thousand, six hundred three".