42312311 has 4 divisors (see below), whose sum is σ = 42325512. Its totient is φ = 42299112.

The previous prime is 42312307. The next prime is 42312323. The reversal of 42312311 is 11321324.

42312311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42312311 - 2² = 42312307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42312311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42312211) 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 in 3 ways as a sum of consecutive naturals, for example, 1625 + ... + 9341.

It is an arithmetic number, because the mean of its divisors is an integer number (10581378).

Almost surely, 2^42312311 is an apocalyptic number.

42312311 is a deficient number, since it is larger than the sum of its proper divisors (13201).

42312311 is an equidigital number, since it uses as much as digits as its factorization.

42312311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13200.

The product of its digits is 144, while the sum is 17.

The square root of 42312311 is about 6504.7913878925. The cubic root of 42312311 is about 348.4621260629.

Adding to 42312311 its reverse (11321324), we get a palindrome (53633635).

The spelling of 42312311 in words is "forty-two million, three hundred twelve thousand, three hundred eleven".