40251312 has 30 divisors (see below), whose sum is σ = 112648172. Its totient is φ = 13417056.

The previous prime is 40251269. The next prime is 40251313. The reversal of 40251312 is 21315204.

40251312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (40251313) 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 in 5 ways as a sum of consecutive naturals, for example, 139618 + ... + 139905.

Almost surely, 2^40251312 is an apocalyptic number.

It is an amenable number.

40251312 is an abundant number, since it is smaller than the sum of its proper divisors (72396860).

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

40251312 is a wasteful number, since it uses less digits than its factorization.

40251312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279537 (or 279528 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 40251312 is about 6344.3921694675. The cubic root of 40251312 is about 342.7099236995.

Adding to 40251312 its reverse (21315204), we get a palindrome (61566516).

The spelling of 40251312 in words is "forty million, two hundred fifty-one thousand, three hundred twelve".