1000203020 has 24 divisors (see below), whose sum is σ = 2109151968. Its totient is φ = 398419200.

The previous prime is 1000202993. The next prime is 1000203049. The reversal of 1000203020 is 203020001.

It is a junction number, because it is equal to n+sod(n) for n = 1000202989 and 1000203007.

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 7 ways as a sum of consecutive naturals, for example, 98936 + ... + 108575.

It is an arithmetic number, because the mean of its divisors is an integer number (87881332).

Almost surely, 2^1000203020 is an apocalyptic number.

1000203020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000203020 is an abundant number, since it is smaller than the sum of its proper divisors (1108948948).

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

1000203020 is a wasteful number, since it uses less digits than its factorization.

1000203020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207761 (or 207759 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 1000203020 is about 31625.9864668282. The cubic root of 1000203020 is about 1000.0676687542.

Adding to 1000203020 its reverse (203020001), we get a palindrome (1203223021).

The spelling of 1000203020 in words is "one billion, two hundred three thousand, twenty".