1305333133 has 4 divisors (see below), whose sum is σ = 1405743388. Its totient is φ = 1204922880.

The previous prime is 1305333119. The next prime is 1305333163. The reversal of 1305333133 is 3313335031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 299047849 + 1006285284 = 17293^2 + 31722^2 .

It is a cyclic number.

It is not a de Polignac number, because 1305333133 - 2¹³ = 1305324941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1305333098 and 1305333107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305333103) 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, 50205108 + ... + 50205133.

It is an arithmetic number, because the mean of its divisors is an integer number (351435847).

Almost surely, 2^1305333133 is an apocalyptic number.

1305333133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1305333133 is a deficient number, since it is larger than the sum of its proper divisors (100410255).

1305333133 is a wasteful number, since it uses less digits than its factorization.

1305333133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100410254.

The product of its (nonzero) digits is 3645, while the sum is 25.

The square root of 1305333133 is about 36129.3943071289. The cubic root of 1305333133 is about 1092.8832938491.

Adding to 1305333133 its reverse (3313335031), we get a palindrome (4618668164).

The spelling of 1305333133 in words is "one billion, three hundred five million, three hundred thirty-three thousand, one hundred thirty-three".