40144331 has 2 divisors, whose sum is σ = 40144332. Its totient is φ = 40144330.

The previous prime is 40144309. The next prime is 40144333. The reversal of 40144331 is 13344104.

It is a happy number.

40144331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40144331 - 2²² = 35950027 is a prime.

It is a super-2 number, since 2×40144331² = 3223134622875122, which contains 22 as substring.

Together with 40144333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40144333) 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, 20072165 + 20072166.

It is an arithmetic number, because the mean of its divisors is an integer number (20072166).

Almost surely, 2^40144331 is an apocalyptic number.

40144331 is a deficient number, since it is larger than the sum of its proper divisors (1).

40144331 is an equidigital number, since it uses as much as digits as its factorization.

40144331 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 40144331 is about 6335.9554133532. The cubic root of 40144331 is about 342.4060331490.

Adding to 40144331 its reverse (13344104), we get a palindrome (53488435).

The spelling of 40144331 in words is "forty million, one hundred forty-four thousand, three hundred thirty-one".