304020133 has 2 divisors, whose sum is σ = 304020134. Its totient is φ = 304020132.

The previous prime is 304020113. The next prime is 304020149. The reversal of 304020133 is 331020403.

It is an a-pointer prime, because the next prime (304020149) can be obtained adding 304020133 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 283652964 + 20367169 = 16842^2 + 4513^2 .

It is a cyclic number.

It is not a de Polignac number, because 304020133 - 2¹³ = 304011941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304020103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152010066 + 152010067.

It is an arithmetic number, because the mean of its divisors is an integer number (152010067).

Almost surely, 2^304020133 is an apocalyptic number.

It is an amenable number.

304020133 is a deficient number, since it is larger than the sum of its proper divisors (1).

304020133 is an equidigital number, since it uses as much as digits as its factorization.

304020133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 304020133 is about 17436.1731179752. The cubic root of 304020133 is about 672.4099245959.

Adding to 304020133 its reverse (331020403), we get a palindrome (635040536).

The spelling of 304020133 in words is "three hundred four million, twenty thousand, one hundred thirty-three".