40344131 has 2 divisors, whose sum is σ = 40344132. Its totient is φ = 40344130.

The previous prime is 40344103. The next prime is 40344167. The reversal of 40344131 is 13144304.

It is a happy number.

40344131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40344131 is a prime.

It is a super-2 number, since 2×40344131² = 3255297812290322, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (40344181) 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 as a sum of consecutive naturals, namely, 20172065 + 20172066.

It is an arithmetic number, because the mean of its divisors is an integer number (20172066).

Almost surely, 2^40344131 is an apocalyptic number.

40344131 is a deficient number, since it is larger than the sum of its proper divisors (1).

40344131 is an equidigital number, since it uses as much as digits as its factorization.

40344131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 40344131 is about 6351.7029999835. The cubic root of 40344131 is about 342.9731496745.

Adding to 40344131 its reverse (13144304), we get a palindrome (53488435).

The spelling of 40344131 in words is "forty million, three hundred forty-four thousand, one hundred thirty-one".