1313023320 has 96 divisors (see below), whose sum is σ = 4876953120. Its totient is φ = 300119040.

The previous prime is 1313023301. The next prime is 1313023337. The reversal of 1313023320 is 233203131.

1313023320 is a `hidden beast` number, since 1 + 31 + 302 + 332 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1313023293 and 1313023302.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 258001 + ... + 263040.

It is an arithmetic number, because the mean of its divisors is an integer number (50801595).

Almost surely, 2^1313023320 is an apocalyptic number.

1313023320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1313023320 is an abundant number, since it is smaller than the sum of its proper divisors (3563929800).

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

1313023320 is a wasteful number, since it uses less digits than its factorization.

1313023320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521065 (or 521058 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 1313023320 is about 36235.6636478484. The cubic root of 1313023320 is about 1095.0252824587.

Adding to 1313023320 its reverse (233203131), we get a palindrome (1546226451).

The spelling of 1313023320 in words is "one billion, three hundred thirteen million, twenty-three thousand, three hundred twenty".