42311322 has 40 divisors (see below), whose sum is σ = 95541600. Its totient is φ = 13994856.

The previous prime is 42311299. The next prime is 42311333. The reversal of 42311322 is 22311324.

42311322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 42311295 and 42311304.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 21579 + ... + 23457.

It is an arithmetic number, because the mean of its divisors is an integer number (2388540).

Almost surely, 2^42311322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42311322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47770800).

42311322 is an abundant number, since it is smaller than the sum of its proper divisors (53230278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42311322 is a wasteful number, since it uses less digits than its factorization.

42311322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032 (or 2023 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 42311322 is about 6504.7153665629. The cubic root of 42311322 is about 348.4594110790.

Adding to 42311322 its reverse (22311324), we get a palindrome (64622646).

It can be divided in two parts, 42 and 311322, that added together give a square (311364 = 558²).

The spelling of 42311322 in words is "forty-two million, three hundred eleven thousand, three hundred twenty-two".