40131606 has 16 divisors (see below), whose sum is σ = 82432944. Its totient is φ = 13015584.

The previous prime is 40131601. The next prime is 40131607. The reversal of 40131606 is 60613104.

It is a super-2 number, since 2×40131606² = 3221091600278472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40131601) by changing a digit.

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, 90165 + ... + 90608.

It is an arithmetic number, because the mean of its divisors is an integer number (5152059).

Almost surely, 2^40131606 is an apocalyptic number.

40131606 is an abundant number, since it is smaller than the sum of its proper divisors (42301338).

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

40131606 is a wasteful number, since it uses less digits than its factorization.

40131606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180815.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 40131606 is about 6334.9511442473. The cubic root of 40131606 is about 342.3698505621.

The spelling of 40131606 in words is "forty million, one hundred thirty-one thousand, six hundred six".