1313320236 has 12 divisors (see below), whose sum is σ = 3064413912. Its totient is φ = 437773408.

The previous prime is 1313320207. The next prime is 1313320237. The reversal of 1313320236 is 6320233131.

It is a happy number.

1313320236 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1313320237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54721665 + ... + 54721688.

It is an arithmetic number, because the mean of its divisors is an integer number (255367826).

Almost surely, 2^1313320236 is an apocalyptic number.

It is an amenable number.

1313320236 is an abundant number, since it is smaller than the sum of its proper divisors (1751093676).

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

1313320236 is a wasteful number, since it uses less digits than its factorization.

1313320236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109443360 (or 109443358 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 1313320236 is about 36239.7604296717. The cubic root of 1313320236 is about 1095.1078161598.

Adding to 1313320236 its reverse (6320233131), we get a palindrome (7633553367).

The spelling of 1313320236 in words is "one billion, three hundred thirteen million, three hundred twenty thousand, two hundred thirty-six".