40331236 has 36 divisors (see below), whose sum is σ = 80974656. Its totient is φ = 17530480.

The previous prime is 40331233. The next prime is 40331237. The reversal of 40331236 is 63213304.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (40331233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9321 + ... + 12943.

It is an arithmetic number, because the mean of its divisors is an integer number (2249296).

Almost surely, 2^40331236 is an apocalyptic number.

40331236 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

40331236 is an abundant number, since it is smaller than the sum of its proper divisors (40643420).

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

40331236 is a wasteful number, since it uses less digits than its factorization.

40331236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672 (or 3659 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 40331236 is about 6350.6878367623. The cubic root of 40331236 is about 342.9366048295.

The spelling of 40331236 in words is "forty million, three hundred thirty-one thousand, two hundred thirty-six".