820348203 has 4 divisors (see below), whose sum is σ = 1093797608. Its totient is φ = 546898800.

The previous prime is 820348187. The next prime is 820348219. The reversal of 820348203 is 302843028.

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

It is an interprime number because it is at equal distance from previous prime (820348187) and next prime (820348219).

It is not a de Polignac number, because 820348203 - 2⁴ = 820348187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (820348253) 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, 136724698 + ... + 136724703.

It is an arithmetic number, because the mean of its divisors is an integer number (273449402).

Almost surely, 2^820348203 is an apocalyptic number.

820348203 is a deficient number, since it is larger than the sum of its proper divisors (273449405).

820348203 is a wasteful number, since it uses less digits than its factorization.

820348203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273449404.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 820348203 is about 28641.7213693591. The cubic root of 820348203 is about 936.1226291684.

The spelling of 820348203 in words is "eight hundred twenty million, three hundred forty-eight thousand, two hundred three".