1000203100 has 36 divisors (see below), whose sum is σ = 2337400744. Its totient is φ = 369305280.

The previous prime is 1000203059. The next prime is 1000203119. The reversal of 1000203100 is 13020001.

It is a super-2 number, since 2×1000203100² = 2000812482499220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 383394 + ... + 385993.

Almost surely, 2^1000203100 is an apocalyptic number.

1000203100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000203100 is an abundant number, since it is smaller than the sum of its proper divisors (1337197644).

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

1000203100 is a wasteful number, since it uses less digits than its factorization.

1000203100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769414 (or 769407 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 1000203100 is about 31625.9877316109. The cubic root of 1000203100 is about 1000.0676954172.

Adding to 1000203100 its reverse (13020001), we get a palindrome (1013223101).

The spelling of 1000203100 in words is "one billion, two hundred three thousand, one hundred".