10203012 has 54 divisors (see below), whose sum is σ = 26790218. Its totient is φ = 3273984.

The previous prime is 10203001. The next prime is 10203013. The reversal of 10203012 is 21030201.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 876096 + 9326916 = 936^2 + 3054^2 .

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 = 10202985 and 10203003.

It is not an unprimeable number, because it can be changed into a prime (10203013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 30108 + ... + 30444.

Almost surely, 2^10203012 is an apocalyptic number.

10203012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10203012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13395109).

10203012 is an abundant number, since it is smaller than the sum of its proper divisors (16587206).

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

10203012 is a wasteful number, since it uses less digits than its factorization.

10203012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 371 counting only the distinct ones).

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

The square root of 10203012 is about 3194.2153966193. The cubic root of 10203012 is about 216.8916332643.

Adding to 10203012 its reverse (21030201), we get a palindrome (31233213).

The spelling of 10203012 in words is "ten million, two hundred three thousand, twelve".