42011311 has 2 divisors, whose sum is σ = 42011312. Its totient is φ = 42011310.

The previous prime is 42011297. The next prime is 42011323. The reversal of 42011311 is 11311024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42011311 - 2¹³ = 42003119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42011291 and 42011300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42011341) 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, 21005655 + 21005656.

It is an arithmetic number, because the mean of its divisors is an integer number (21005656).

Almost surely, 2^42011311 is an apocalyptic number.

42011311 is a deficient number, since it is larger than the sum of its proper divisors (1).

42011311 is an equidigital number, since it uses as much as digits as its factorization.

42011311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 42011311 is about 6481.6133022574. The cubic root of 42011311 is about 347.6338659239.

Adding to 42011311 its reverse (11311024), we get a palindrome (53322335).

The spelling of 42011311 in words is "forty-two million, eleven thousand, three hundred eleven".