1313323056 has 60 divisors (see below), whose sum is σ = 3678126192. Its totient is φ = 437459328.

The previous prime is 1313323051. The next prime is 1313323057. The reversal of 1313323056 is 6503233131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1313323051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285285 + ... + 289851.

Almost surely, 2^1313323056 is an apocalyptic number.

1313323056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1313323056 is an abundant number, since it is smaller than the sum of its proper divisors (2364803136).

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

1313323056 is a wasteful number, since it uses less digits than its factorization.

1313323056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6578 (or 6569 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

The square root of 1313323056 is about 36239.7993371928. The cubic root of 1313323056 is about 1095.1085999751.

Adding to 1313323056 its reverse (6503233131), we get a palindrome (7816556187).

The spelling of 1313323056 in words is "one billion, three hundred thirteen million, three hundred twenty-three thousand, fifty-six".