40342331 has 2 divisors, whose sum is σ = 40342332. Its totient is φ = 40342330.

The previous prime is 40342307. The next prime is 40342349. The reversal of 40342331 is 13324304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40342331 - 2²² = 36148027 is a prime.

It is a super-2 number, since 2×40342331² = 3255007341027122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40342231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20171165 + 20171166.

It is an arithmetic number, because the mean of its divisors is an integer number (20171166).

Almost surely, 2^40342331 is an apocalyptic number.

40342331 is a deficient number, since it is larger than the sum of its proper divisors (1).

40342331 is an equidigital number, since it uses as much as digits as its factorization.

40342331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 40342331 is about 6351.5613041204. The cubic root of 40342331 is about 342.9680488843.

Adding to 40342331 its reverse (13324304), we get a palindrome (53666635).

The spelling of 40342331 in words is "forty million, three hundred forty-two thousand, three hundred thirty-one".