1311140444 has 12 divisors (see below), whose sum is σ = 2325927744. Its totient is φ = 646589664.

The previous prime is 1311140437. The next prime is 1311140483. The reversal of 1311140444 is 4440411131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2244812 + ... + 2245395.

It is an arithmetic number, because the mean of its divisors is an integer number (193827312).

Almost surely, 2^1311140444 is an apocalyptic number.

It is an amenable number.

1311140444 is a deficient number, since it is larger than the sum of its proper divisors (1014787300).

1311140444 is a wasteful number, since it uses less digits than its factorization.

1311140444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4490284 (or 4490282 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1311140444 is about 36209.6733484300. The cubic root of 1311140444 is about 1094.5016098229.

Adding to 1311140444 its reverse (4440411131), we get a palindrome (5751551575).

The spelling of 1311140444 in words is "one billion, three hundred eleven million, one hundred forty thousand, four hundred forty-four".