1000020203 has 16 divisors (see below), whose sum is σ = 1234484160. Its totient is φ = 788852736.

The previous prime is 1000020193. The next prime is 1000020209. The reversal of 1000020203 is 3020200001.

It is not a de Polignac number, because 1000020203 - 2⁶ = 1000020139 is a prime.

It is a super-2 number, since 2×1000020203² = 2000080812816322418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1000020209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14363 + ... + 46971.

It is an arithmetic number, because the mean of its divisors is an integer number (77155260).

Almost surely, 2^1000020203 is an apocalyptic number.

1000020203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1000020203 is a deficient number, since it is larger than the sum of its proper divisors (234463957).

1000020203 is a wasteful number, since it uses less digits than its factorization.

1000020203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32966.

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

The square root of 1000020203 is about 31623.0960375483. The cubic root of 1000020203 is about 1000.0067342880.

Adding to 1000020203 its reverse (3020200001), we get a palindrome (4020220204).

It can be divided in two parts, 10000 and 20203, that added together give a palindrome (30203).

The spelling of 1000020203 in words is "one billion, twenty thousand, two hundred three".