1303312320 has 84 divisors (see below), whose sum is σ = 4482861240. Its totient is φ = 347549184.

The previous prime is 1303312313. The next prime is 1303312337. The reversal of 1303312320 is 232133031.

1303312320 is a `hidden beast` number, since 1 + 30 + 3 + 312 + 320 = 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 = 1303312293 and 1303312302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223390 + ... + 229149.

Almost surely, 2^1303312320 is an apocalyptic number.

1303312320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1303312320 is an abundant number, since it is smaller than the sum of its proper divisors (3179548920).

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

1303312320 is a wasteful number, since it uses less digits than its factorization.

1303312320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452562 (or 452549 counting only the distinct ones).

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

The square root of 1303312320 is about 36101.4171466994. The cubic root of 1303312320 is about 1092.3190308845.

Adding to 1303312320 its reverse (232133031), we get a palindrome (1535445351).

It can be divided in two parts, 130331 and 2320, that added together give a cube (132651 = 51³).

The spelling of 1303312320 in words is "one billion, three hundred three million, three hundred twelve thousand, three hundred twenty".