1311545360 has 40 divisors (see below), whose sum is σ = 3087957120. Its totient is φ = 517974912.

The previous prime is 1311545321. The next prime is 1311545363. The reversal of 1311545360 is 635451131.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1311545363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97442 + ... + 110081.

It is an arithmetic number, because the mean of its divisors is an integer number (77198928).

Almost surely, 2^1311545360 is an apocalyptic number.

1311545360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311545360 is an abundant number, since it is smaller than the sum of its proper divisors (1776411760).

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

1311545360 is a wasteful number, since it uses less digits than its factorization.

1311545360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207615 (or 207609 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 1311545360 is about 36215.2641851471. The cubic root of 1311545360 is about 1094.6142688955.

Adding to 1311545360 its reverse (635451131), we get a palindrome (1946996491).

The spelling of 1311545360 in words is "one billion, three hundred eleven million, five hundred forty-five thousand, three hundred sixty".