1311342444 has 36 divisors (see below), whose sum is σ = 3337042800. Its totient is φ = 434178720.

The previous prime is 1311342443. The next prime is 1311342449. The reversal of 1311342444 is 4442431131.

1311342444 is a `hidden beast` number, since 1 + 311 + 342 + 4 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1311342443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116872 + ... + 127599.

Almost surely, 2^1311342444 is an apocalyptic number.

It is an amenable number.

1311342444 is an abundant number, since it is smaller than the sum of its proper divisors (2025700356).

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

1311342444 is a wasteful number, since it uses less digits than its factorization.

1311342444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244630 (or 244625 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 1311342444 is about 36212.4625508954. The cubic root of 1311342444 is about 1094.5578148295.

Adding to 1311342444 its reverse (4442431131), we get a palindrome (5753773575).

The spelling of 1311342444 in words is "one billion, three hundred eleven million, three hundred forty-two thousand, four hundred forty-four".