128162203 has 4 divisors (see below), whose sum is σ = 138020848. Its totient is φ = 118303560.

The previous prime is 128162189. The next prime is 128162249. The reversal of 128162203 is 302261821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128162203 - 2¹³ = 128154011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128162273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4929303 + ... + 4929328.

It is an arithmetic number, because the mean of its divisors is an integer number (34505212).

Almost surely, 2^128162203 is an apocalyptic number.

128162203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

128162203 is a deficient number, since it is larger than the sum of its proper divisors (9858645).

128162203 is an equidigital number, since it uses as much as digits as its factorization.

128162203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9858644.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 128162203 is about 11320.8746570219. The cubic root of 128162203 is about 504.1812081987.

The spelling of 128162203 in words is "one hundred twenty-eight million, one hundred sixty-two thousand, two hundred three".