1311324304 has 80 divisors (see below), whose sum is σ = 2708826624. Its totient is φ = 614016000.

The previous prime is 1311324283. The next prime is 1311324307. The reversal of 1311324304 is 4034231131.

It is a super-2 number, since 2×1311324304² = 3439142860522168832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311324307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2181604 + ... + 2182204.

Almost surely, 2^1311324304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311324304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1354413312).

1311324304 is an abundant number, since it is smaller than the sum of its proper divisors (1397502320).

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

1311324304 is a wasteful number, since it uses less digits than its factorization.

1311324304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776 (or 770 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1311324304 is about 36212.2120837709. The cubic root of 1311324304 is about 1094.5527677445.

Adding to 1311324304 its reverse (4034231131), we get a palindrome (5345555435).

The spelling of 1311324304 in words is "one billion, three hundred eleven million, three hundred twenty-four thousand, three hundred four".