1003013020 has 24 divisors (see below), whose sum is σ = 2163256704. Its totient is φ = 390361536.

The previous prime is 1003013017. The next prime is 1003013047. The reversal of 1003013020 is 203103001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1003012988 and 1003013006.

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, 676972 + ... + 678451.

It is an arithmetic number, because the mean of its divisors is an integer number (90135696).

Almost surely, 2^1003013020 is an apocalyptic number.

1003013020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1003013020 is an abundant number, since it is smaller than the sum of its proper divisors (1160243684).

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

1003013020 is a wasteful number, since it uses less digits than its factorization.

1003013020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355469 (or 1355467 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 1003013020 is about 31670.3807997315. The cubic root of 1003013020 is about 1001.0033329862.

Adding to 1003013020 its reverse (203103001), we get a palindrome (1206116021).

The spelling of 1003013020 in words is "one billion, three million, thirteen thousand, twenty".