1000203012 has 48 divisors (see below), whose sum is σ = 2597616000. Its totient is φ = 332822880.

The previous prime is 1000202993. The next prime is 1000203049. The reversal of 1000203012 is 2103020001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1000202985 and 1000203003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56962 + ... + 72422.

It is an arithmetic number, because the mean of its divisors is an integer number (54117000).

Almost surely, 2^1000203012 is an apocalyptic number.

1000203012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1000203012 is an abundant number, since it is smaller than the sum of its proper divisors (1597412988).

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

1000203012 is a wasteful number, since it uses less digits than its factorization.

1000203012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16073 (or 16065 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1000203012 is about 31625.9863403499. The cubic root of 1000203012 is about 1000.0676660879.

Adding to 1000203012 its reverse (2103020001), we get a palindrome (3103223013).

The spelling of 1000203012 in words is "one billion, two hundred three thousand, twelve".