1303320133 has 4 divisors (see below), whose sum is σ = 1303483360. Its totient is φ = 1303156908.

The previous prime is 1303320121. The next prime is 1303320157. The reversal of 1303320133 is 3310233031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1303320133 - 2⁹ = 1303319621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1303320133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303320103) 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, 68985 + ... + 85822.

It is an arithmetic number, because the mean of its divisors is an integer number (325870840).

Almost surely, 2^1303320133 is an apocalyptic number.

It is an amenable number.

1303320133 is a deficient number, since it is larger than the sum of its proper divisors (163227).

1303320133 is an equidigital number, since it uses as much as digits as its factorization.

1303320133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163226.

The product of its (nonzero) digits is 486, while the sum is 19.

The square root of 1303320133 is about 36101.5253555857. The cubic root of 1303320133 is about 1092.3212135978.

Adding to 1303320133 its reverse (3310233031), we get a palindrome (4613553164).

The spelling of 1303320133 in words is "one billion, three hundred three million, three hundred twenty thousand, one hundred thirty-three".