40331605 has 8 divisors (see below), whose sum is σ = 50067000. Its totient is φ = 31152576.

The previous prime is 40331587. The next prime is 40331639. The reversal of 40331605 is 50613304.

It can be written as a sum of positive squares in 4 ways, for example, as 5391684 + 34939921 = 2322^2 + 5911^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40331605 - 2¹⁵ = 40298837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138930 + ... + 139219.

It is an arithmetic number, because the mean of its divisors is an integer number (6258375).

Almost surely, 2^40331605 is an apocalyptic number.

It is an amenable number.

40331605 is a deficient number, since it is larger than the sum of its proper divisors (9735395).

40331605 is a wasteful number, since it uses less digits than its factorization.

40331605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278183.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 40331605 is about 6350.7168886670. The cubic root of 40331605 is about 342.9376506956.

Adding to 40331605 its reverse (50613304), we get a palindrome (90944909).

The spelling of 40331605 in words is "forty million, three hundred thirty-one thousand, six hundred five".