40343081 has 8 divisors (see below), whose sum is σ = 42344640. Its totient is φ = 38362192.

The previous prime is 40343053. The next prime is 40343087. The reversal of 40343081 is 18034304.

40343081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40343081 is a prime.

It is a super-2 number, since 2×40343081² = 3255128369145122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40343087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1091 + ... + 9048.

It is an arithmetic number, because the mean of its divisors is an integer number (5293080).

Almost surely, 2^40343081 is an apocalyptic number.

It is an amenable number.

40343081 is a deficient number, since it is larger than the sum of its proper divisors (2001559).

40343081 is a wasteful number, since it uses less digits than its factorization.

40343081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10335.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 40343081 is about 6351.6203444475. The cubic root of 40343081 is about 342.9701742320.

Adding to 40343081 its reverse (18034304), we get a palindrome (58377385).

The spelling of 40343081 in words is "forty million, three hundred forty-three thousand, eighty-one".