1442216331 has 12 divisors (see below), whose sum is σ = 2090949120. Its totient is φ = 957901680.

The previous prime is 1442216329. The next prime is 1442216359. The reversal of 1442216331 is 1336122441.

It is a happy number.

1442216331 is a `hidden beast` number, since 1 + 4 + 4 + 2 + 21 + 633 + 1 = 666.

It is not a de Polignac number, because 1442216331 - 2¹ = 1442216329 is a prime.

It is a super-2 number, since 2×1442216331² = 4159975890806203122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1442216295 and 1442216304.

It is not an unprimeable number, because it can be changed into a prime (1442217331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 295435 + ... + 300276.

It is an arithmetic number, because the mean of its divisors is an integer number (174245760).

Almost surely, 2^1442216331 is an apocalyptic number.

1442216331 is a deficient number, since it is larger than the sum of its proper divisors (648732789).

1442216331 is a wasteful number, since it uses less digits than its factorization.

1442216331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595986 (or 595983 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 1442216331 is about 37976.5234190809. The cubic root of 1442216331 is about 1129.8222841620.

Adding to 1442216331 its reverse (1336122441), we get a palindrome (2778338772).

The spelling of 1442216331 in words is "one billion, four hundred forty-two million, two hundred sixteen thousand, three hundred thirty-one".