42216311 has 2 divisors, whose sum is σ = 42216312. Its totient is φ = 42216310.

The previous prime is 42216299. The next prime is 42216341. The reversal of 42216311 is 11361224.

42216311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42216311 - 2²² = 38022007 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42216341) 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, 21108155 + 21108156.

It is an arithmetic number, because the mean of its divisors is an integer number (21108156).

Almost surely, 2^42216311 is an apocalyptic number.

42216311 is a deficient number, since it is larger than the sum of its proper divisors (1).

42216311 is an equidigital number, since it uses as much as digits as its factorization.

42216311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 20.

The square root of 42216311 is about 6497.4080216653. The cubic root of 42216311 is about 348.1983911936.

Adding to 42216311 its reverse (11361224), we get a palindrome (53577535).

The spelling of 42216311 in words is "forty-two million, two hundred sixteen thousand, three hundred eleven".