40203312 has 40 divisors (see below), whose sum is σ = 106670256. Its totient is φ = 13038336.

The previous prime is 40203271. The next prime is 40203313. The reversal of 40203312 is 21330204.

It is a junction number, because it is equal to n+sod(n) for n = 40203291 and 40203300.

It is not an unprimeable number, because it can be changed into a prime (40203313) 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, 9543 + ... + 13094.

Almost surely, 2^40203312 is an apocalyptic number.

It is an amenable number.

40203312 is an abundant number, since it is smaller than the sum of its proper divisors (66466944).

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

40203312 is a wasteful number, since it uses less digits than its factorization.

40203312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22685 (or 22679 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 40203312 is about 6340.6081727229. The cubic root of 40203312 is about 342.5736414369.

Adding to 40203312 its reverse (21330204), we get a palindrome (61533516).

The spelling of 40203312 in words is "forty million, two hundred three thousand, three hundred twelve".