1203103220 has 72 divisors (see below), whose sum is σ = 2805491808. Its totient is φ = 429803200.

The previous prime is 1203103207. The next prime is 1203103229. The reversal of 1203103220 is 223013021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1203103195 and 1203103204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203103229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 765035 + ... + 766605.

It is an arithmetic number, because the mean of its divisors is an integer number (38965164).

Almost surely, 2^1203103220 is an apocalyptic number.

1203103220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1203103220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1402745904).

1203103220 is an abundant number, since it is smaller than the sum of its proper divisors (1602388588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1203103220 is a wasteful number, since it uses less digits than its factorization.

1203103220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709 (or 1648 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1203103220 is about 34685.7783536711. The cubic root of 1203103220 is about 1063.5737982931.

Adding to 1203103220 its reverse (223013021), we get a palindrome (1426116241).

The spelling of 1203103220 in words is "one billion, two hundred three million, one hundred three thousand, two hundred twenty".