40665131 has 8 divisors (see below), whose sum is σ = 43923600. Its totient is φ = 37425312.

The previous prime is 40665091. The next prime is 40665167. The reversal of 40665131 is 13156604.

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 40665131 - 2⁶ = 40665067 is a prime.

It is a super-2 number, since 2×40665131² = 3307305758494322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40665131.

It is not an unprimeable number, because it can be changed into a prime (40665431) 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, 56 + ... + 9018.

It is an arithmetic number, because the mean of its divisors is an integer number (5490450).

Almost surely, 2^40665131 is an apocalyptic number.

40665131 is a deficient number, since it is larger than the sum of its proper divisors (3258469).

40665131 is a wasteful number, since it uses less digits than its factorization.

40665131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9325.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 40665131 is about 6376.9217495591. The cubic root of 40665131 is about 343.8803751850.

The spelling of 40665131 in words is "forty million, six hundred sixty-five thousand, one hundred thirty-one".