1320303505 has 8 divisors (see below), whose sum is σ = 1591345152. Its totient is φ = 1051588848.

The previous prime is 1320303499. The next prime is 1320303529. The reversal of 1320303505 is 5053030231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1320303505 - 2³ = 1320303497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580497 + ... + 582766.

It is an arithmetic number, because the mean of its divisors is an integer number (198918144).

Almost surely, 2^1320303505 is an apocalyptic number.

It is an amenable number.

1320303505 is a deficient number, since it is larger than the sum of its proper divisors (271041647).

1320303505 is a wasteful number, since it uses less digits than its factorization.

1320303505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163495.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 1320303505 is about 36335.9808591980. The cubic root of 1320303505 is about 1097.0453780948.

Adding to 1320303505 its reverse (5053030231), we get a palindrome (6373333736).

The spelling of 1320303505 in words is "one billion, three hundred twenty million, three hundred three thousand, five hundred five".