1303011220 has 48 divisors (see below), whose sum is σ = 3228115968. Its totient is φ = 432334080.

The previous prime is 1303011197. The next prime is 1303011233. The reversal of 1303011220 is 221103031.

It is a self number, because there is not a number n which added to its sum of digits gives 1303011220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145777 + ... + 154456.

It is an arithmetic number, because the mean of its divisors is an integer number (67252416).

Almost surely, 2^1303011220 is an apocalyptic number.

1303011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1303011220 is an abundant number, since it is smaller than the sum of its proper divisors (1925104748).

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

1303011220 is a wasteful number, since it uses less digits than its factorization.

1303011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300280 (or 300278 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1303011220 is about 36097.2467094098. The cubic root of 1303011220 is about 1092.2349061032.

Adding to 1303011220 its reverse (221103031), we get a palindrome (1524114251).

The spelling of 1303011220 in words is "one billion, three hundred three million, eleven thousand, two hundred twenty".