1311444134 has 48 divisors (see below), whose sum is σ = 2688423696. Its totient is φ = 471643200.

The previous prime is 1311444097. The next prime is 1311444151. The reversal of 1311444134 is 4314441131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32777 + ... + 60804.

It is an arithmetic number, because the mean of its divisors is an integer number (56008827).

Almost surely, 2^1311444134 is an apocalyptic number.

1311444134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1311444134 is an abundant number, since it is smaller than the sum of its proper divisors (1376979562).

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

1311444134 is a wasteful number, since it uses less digits than its factorization.

1311444134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93621 (or 93614 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 1311444134 is about 36213.8665983073. The cubic root of 1311444134 is about 1094.5861071361.

Adding to 1311444134 its reverse (4314441131), we get a palindrome (5625885265).

The spelling of 1311444134 in words is "one billion, three hundred eleven million, four hundred forty-four thousand, one hundred thirty-four".