1442440311 has 16 divisors (see below), whose sum is σ = 2121715680. Its totient is φ = 866004480.

The previous prime is 1442440303. The next prime is 1442440313. The reversal of 1442440311 is 1130442441.

It is not a de Polignac number, because 1442440311 - 2³ = 1442440303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442440313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 449446 + ... + 452643.

It is an arithmetic number, because the mean of its divisors is an integer number (132607230).

Almost surely, 2^1442440311 is an apocalyptic number.

1442440311 is a deficient number, since it is larger than the sum of its proper divisors (679275369).

1442440311 is a wasteful number, since it uses less digits than its factorization.

1442440311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902146.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1442440311 is about 37979.4722317201. The cubic root of 1442440311 is about 1129.8807692614.

Adding to 1442440311 its reverse (1130442441), we get a palindrome (2572882752).

The spelling of 1442440311 in words is "one billion, four hundred forty-two million, four hundred forty thousand, three hundred eleven".