11403312 has 40 divisors (see below), whose sum is σ = 29585904. Its totient is φ = 3784704.

The previous prime is 11403307. The next prime is 11403313. The reversal of 11403312 is 21330411.

It is a junction number, because it is equal to n+sod(n) for n = 11403291 and 11403300.

It is not an unprimeable number, because it can be changed into a prime (11403313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16608 + ... + 17280.

Almost surely, 2^11403312 is an apocalyptic number.

11403312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11403312 is an abundant number, since it is smaller than the sum of its proper divisors (18182592).

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

11403312 is a wasteful number, since it uses less digits than its factorization.

11403312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037 (or 1031 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 11403312 is about 3376.8790324795. The cubic root of 11403312 is about 225.0835048073.

Adding to 11403312 its reverse (21330411), we get a palindrome (32733723).

The spelling of 11403312 in words is "eleven million, four hundred three thousand, three hundred twelve".