1304500133 has 4 divisors (see below), whose sum is σ = 1304685408. Its totient is φ = 1304314860.

The previous prime is 1304500121. The next prime is 1304500139. The reversal of 1304500133 is 3310054031.

It is a happy number.

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 1304500133 - 2¹⁰ = 1304499109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304500139) 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, 81641 + ... + 96302.

It is an arithmetic number, because the mean of its divisors is an integer number (326171352).

Almost surely, 2^1304500133 is an apocalyptic number.

It is an amenable number.

1304500133 is a deficient number, since it is larger than the sum of its proper divisors (185275).

1304500133 is an equidigital number, since it uses as much as digits as its factorization.

1304500133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185274.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 1304500133 is about 36117.8644579106. The cubic root of 1304500133 is about 1092.6507694252.

Adding to 1304500133 its reverse (3310054031), we get a palindrome (4614554164).

The spelling of 1304500133 in words is "one billion, three hundred four million, five hundred thousand, one hundred thirty-three".