40243111 has 2 divisors, whose sum is σ = 40243112. Its totient is φ = 40243110.

The previous prime is 40243079. The next prime is 40243117. The reversal of 40243111 is 11134204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40243111 - 2⁵ = 40243079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40243117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20121555 + 20121556.

It is an arithmetic number, because the mean of its divisors is an integer number (20121556).

Almost surely, 2^40243111 is an apocalyptic number.

40243111 is a deficient number, since it is larger than the sum of its proper divisors (1).

40243111 is an equidigital number, since it uses as much as digits as its factorization.

40243111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 40243111 is about 6343.7458177326. The cubic root of 40243111 is about 342.6866469842.

Adding to 40243111 its reverse (11134204), we get a palindrome (51377315).

The spelling of 40243111 in words is "forty million, two hundred forty-three thousand, one hundred eleven".