40513312 has 48 divisors (see below), whose sum is σ = 96526080. Its totient is φ = 16339968.

The previous prime is 40513279. The next prime is 40513331. The reversal of 40513312 is 21331504.

It is a self number, because there is not a number n which added to its sum of digits gives 40513312.

It is an unprimeable number.

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, 1512 + ... + 9127.

It is an arithmetic number, because the mean of its divisors is an integer number (2010960).

Almost surely, 2^40513312 is an apocalyptic number.

It is an amenable number.

40513312 is an abundant number, since it is smaller than the sum of its proper divisors (56012768).

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

40513312 is a wasteful number, since it uses less digits than its factorization.

40513312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10673 (or 10665 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 40513312 is about 6365.0068342461. The cubic root of 40513312 is about 343.4518944122.

Adding to 40513312 its reverse (21331504), we get a palindrome (61844816).

The spelling of 40513312 in words is "forty million, five hundred thirteen thousand, three hundred twelve".