304145137 has 2 divisors, whose sum is σ = 304145138. Its totient is φ = 304145136.

The previous prime is 304145099. The next prime is 304145161. The reversal of 304145137 is 731541403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 266211856 + 37933281 = 16316^2 + 6159^2 .

It is a cyclic number.

It is not a de Polignac number, because 304145137 - 2²⁷ = 169927409 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (304145167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152072568 + 152072569.

It is an arithmetic number, because the mean of its divisors is an integer number (152072569).

Almost surely, 2^304145137 is an apocalyptic number.

It is an amenable number.

304145137 is a deficient number, since it is larger than the sum of its proper divisors (1).

304145137 is an equidigital number, since it uses as much as digits as its factorization.

304145137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 304145137 is about 17439.7573664314. The cubic root of 304145137 is about 672.5020702617.

The spelling of 304145137 in words is "three hundred four million, one hundred forty-five thousand, one hundred thirty-seven".