1311342160 has 120 divisors (see below), whose sum is σ = 3242558088. Its totient is φ = 492825600.

The previous prime is 1311342139. The next prime is 1311342163. The reversal of 1311342160 is 612431131.

It can be written as a sum of positive squares in 4 ways, for example, as 255872016 + 1055470144 = 15996^2 + 32488^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311342163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2844330 + ... + 2844790.

Almost surely, 2^1311342160 is an apocalyptic number.

1311342160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311342160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1621279044).

1311342160 is an abundant number, since it is smaller than the sum of its proper divisors (1931215928).

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

1311342160 is a wasteful number, since it uses less digits than its factorization.

1311342160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1311342160 is about 36212.4586295932. The cubic root of 1311342160 is about 1094.5577358127.

Adding to 1311342160 its reverse (612431131), we get a palindrome (1923773291).

The spelling of 1311342160 in words is "one billion, three hundred eleven million, three hundred forty-two thousand, one hundred sixty".