40340312 has 8 divisors (see below), whose sum is σ = 75638100. Its totient is φ = 20170152.

The previous prime is 40340297. The next prime is 40340317. The reversal of 40340312 is 21304304.

40340312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40340317) 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 as a sum of consecutive naturals, namely, 2521262 + ... + 2521277.

Almost surely, 2^40340312 is an apocalyptic number.

It is an amenable number.

40340312 is a deficient number, since it is larger than the sum of its proper divisors (35297788).

40340312 is a wasteful number, since it uses less digits than its factorization.

40340312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5042545 (or 5042541 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 40340312 is about 6351.4023648325. The cubic root of 40340312 is about 342.9623273173.

Adding to 40340312 its reverse (21304304), we get a palindrome (61644616).

The spelling of 40340312 in words is "forty million, three hundred forty thousand, three hundred twelve".