40605331 has 8 divisors (see below), whose sum is σ = 44024400. Its totient is φ = 37228512.

The previous prime is 40605311. The next prime is 40605347. The reversal of 40605331 is 13350604.

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 40605331 - 2⁷ = 40605203 is a prime.

It is a super-2 number, since 2×40605331² = 3297585811239122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40605311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8545 + ... + 12418.

It is an arithmetic number, because the mean of its divisors is an integer number (5503050).

Almost surely, 2^40605331 is an apocalyptic number.

40605331 is a deficient number, since it is larger than the sum of its proper divisors (3419069).

40605331 is a wasteful number, since it uses less digits than its factorization.

40605331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21125.

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

The square root of 40605331 is about 6372.2312418807. The cubic root of 40605331 is about 343.7117283673.

Adding to 40605331 its reverse (13350604), we get a palindrome (53955935).

The spelling of 40605331 in words is "forty million, six hundred five thousand, three hundred thirty-one".