128321203 has 8 divisors (see below), whose sum is σ = 130006800. Its totient is φ = 126643200.

The previous prime is 128321197. The next prime is 128321243. The reversal of 128321203 is 302123821.

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

It is a de Polignac number, because none of the positive numbers 2^k-128321203 is a prime.

It is a super-2 number, since 2×128321203² = 32932662278734418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128321243) 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, 37248 + ... + 40546.

It is an arithmetic number, because the mean of its divisors is an integer number (16250850).

Almost surely, 2^128321203 is an apocalyptic number.

128321203 is a deficient number, since it is larger than the sum of its proper divisors (1685597).

128321203 is an equidigital number, since it uses as much as digits as its factorization.

128321203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3797.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 128321203 is about 11327.8949059391. The cubic root of 128321203 is about 504.3896203562.

The spelling of 128321203 in words is "one hundred twenty-eight million, three hundred twenty-one thousand, two hundred three".