40311043 has 2 divisors, whose sum is σ = 40311044. Its totient is φ = 40311042.

The previous prime is 40311023. The next prime is 40311071. The reversal of 40311043 is 34011304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40311043 - 2⁹ = 40310531 is a prime.

It is not a weakly prime, because it can be changed into another prime (40311013) 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 as a sum of consecutive naturals, namely, 20155521 + 20155522.

It is an arithmetic number, because the mean of its divisors is an integer number (20155522).

Almost surely, 2^40311043 is an apocalyptic number.

40311043 is a deficient number, since it is larger than the sum of its proper divisors (1).

40311043 is an equidigital number, since it uses as much as digits as its factorization.

40311043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 40311043 is about 6349.0978099254. The cubic root of 40311043 is about 342.8793615644.

Adding to 40311043 its reverse (34011304), we get a palindrome (74322347).

The spelling of 40311043 in words is "forty million, three hundred eleven thousand, forty-three".