1311323524 has 12 divisors (see below), whose sum is σ = 2622647104. Its totient is φ = 561995784.

The previous prime is 1311323491. The next prime is 1311323539. The reversal of 1311323524 is 4253231131.

It is a happy number.

1311323524 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23416464 + ... + 23416519.

Almost surely, 2^1311323524 is an apocalyptic number.

1311323524 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1311323524 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1311323524 is a wasteful number, since it uses less digits than its factorization.

1311323524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46832994 (or 46832992 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 1311323524 is about 36212.2013139218. The cubic root of 1311323524 is about 1094.5525507244.

Adding to 1311323524 its reverse (4253231131), we get a palindrome (5564554655).

The spelling of 1311323524 in words is "one billion, three hundred eleven million, three hundred twenty-three thousand, five hundred twenty-four".