40242311 has 2 divisors, whose sum is σ = 40242312. Its totient is φ = 40242310.

The previous prime is 40242289. The next prime is 40242313. The reversal of 40242311 is 11324204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40242311 - 2¹⁸ = 39980167 is a prime.

Together with 40242313, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40242311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40242313) 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, 20121155 + 20121156.

It is an arithmetic number, because the mean of its divisors is an integer number (20121156).

Almost surely, 2^40242311 is an apocalyptic number.

40242311 is a deficient number, since it is larger than the sum of its proper divisors (1).

40242311 is an equidigital number, since it uses as much as digits as its factorization.

40242311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 40242311 is about 6343.6827631905. The cubic root of 40242311 is about 342.6843761928.

Adding to 40242311 its reverse (11324204), we get a palindrome (51566515).

The spelling of 40242311 in words is "forty million, two hundred forty-two thousand, three hundred eleven".