40032312 has 32 divisors (see below), whose sum is σ = 102410880. Its totient is φ = 13033440.

The previous prime is 40032301. The next prime is 40032319. The reversal of 40032312 is 21323004.

It is a junction number, because it is equal to n+sod(n) for n = 40032291 and 40032300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40032319) 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, 18364 + ... + 20427.

It is an arithmetic number, because the mean of its divisors is an integer number (3200340).

Almost surely, 2^40032312 is an apocalyptic number.

It is an amenable number.

40032312 is an abundant number, since it is smaller than the sum of its proper divisors (62378568).

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

40032312 is a wasteful number, since it uses less digits than its factorization.

40032312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38843 (or 38839 counting only the distinct ones).

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

The square root of 40032312 is about 6327.1092925601. The cubic root of 40032312 is about 342.0872524549.

Adding to 40032312 its reverse (21323004), we get a palindrome (61355316).

The spelling of 40032312 in words is "forty million, thirty-two thousand, three hundred twelve".