1003213020 has 24 divisors (see below), whose sum is σ = 2808996624. Its totient is φ = 267523456.

The previous prime is 1003213019. The next prime is 1003213039. The reversal of 1003213020 is 203123001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1003212987 and 1003213005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8360049 + ... + 8360168.

It is an arithmetic number, because the mean of its divisors is an integer number (117041526).

Almost surely, 2^1003213020 is an apocalyptic number.

1003213020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1003213020 is an abundant number, since it is smaller than the sum of its proper divisors (1805783604).

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

1003213020 is a wasteful number, since it uses less digits than its factorization.

1003213020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16720229 (or 16720227 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1003213020 is about 31673.5381667410. The cubic root of 1003213020 is about 1001.0698616545.

Adding to 1003213020 its reverse (203123001), we get a palindrome (1206336021).

The spelling of 1003213020 in words is "one billion, three million, two hundred thirteen thousand, twenty".