40431238 has 16 divisors (see below), whose sum is σ = 61326720. Its totient is φ = 19990656.

The previous prime is 40431199. The next prime is 40431241. The reversal of 40431238 is 83213404.

40431238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 119806 + ... + 120142.

It is an arithmetic number, because the mean of its divisors is an integer number (3832920).

Almost surely, 2^40431238 is an apocalyptic number.

40431238 is a deficient number, since it is larger than the sum of its proper divisors (20895482).

40431238 is a wasteful number, since it uses less digits than its factorization.

40431238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 40431238 is about 6358.5562826793. The cubic root of 40431238 is about 343.2198099765.

The spelling of 40431238 in words is "forty million, four hundred thirty-one thousand, two hundred thirty-eight".