10203312 has 40 divisors (see below), whose sum is σ = 30125056. Its totient is φ = 2915136.

The previous prime is 10203299. The next prime is 10203317. The reversal of 10203312 is 21330201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (10203317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14848 + ... + 15519.

Almost surely, 2^10203312 is an apocalyptic number.

10203312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10203312 is an abundant number, since it is smaller than the sum of its proper divisors (19921744).

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

10203312 is a wasteful number, since it uses less digits than its factorization.

10203312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30385 (or 30379 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 10203312 is about 3194.2623561630. The cubic root of 10203312 is about 216.8937590043.

Adding to 10203312 its reverse (21330201), we get a palindrome (31533513).

The spelling of 10203312 in words is "ten million, two hundred three thousand, three hundred twelve".