1204305133 has 4 divisors (see below), whose sum is σ = 1206906688. Its totient is φ = 1201703580.

The previous prime is 1204305131. The next prime is 1204305169. The reversal of 1204305133 is 3315034021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3315034021 = 13 ⋅255002617.

It is a cyclic number.

It is not a de Polignac number, because 1204305133 - 2¹ = 1204305131 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 (1204305131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1300083 + ... + 1301008.

It is an arithmetic number, because the mean of its divisors is an integer number (301726672).

Almost surely, 2^1204305133 is an apocalyptic number.

It is an amenable number.

1204305133 is a deficient number, since it is larger than the sum of its proper divisors (2601555).

1204305133 is an equidigital number, since it uses as much as digits as its factorization.

1204305133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2601554.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1204305133 is about 34703.0997606842. The cubic root of 1204305133 is about 1063.9278542886.

Adding to 1204305133 its reverse (3315034021), we get a palindrome (4519339154).

The spelling of 1204305133 in words is "one billion, two hundred four million, three hundred five thousand, one hundred thirty-three".