304040131273 has 2 divisors, whose sum is σ = 304040131274. Its totient is φ = 304040131272.

The previous prime is 304040131223. The next prime is 304040131279. The reversal of 304040131273 is 372131040403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 277210674064 + 26829457209 = 526508^2 + 163797^2 .

It is a cyclic number.

It is not a de Polignac number, because 304040131273 - 2⁹ = 304040130761 is a prime.

It is not a weakly prime, because it can be changed into another prime (304040131279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152020065636 + 152020065637.

It is an arithmetic number, because the mean of its divisors is an integer number (152020065637).

Almost surely, 2^304040131273 is an apocalyptic number.

It is an amenable number.

304040131273 is a deficient number, since it is larger than the sum of its proper divisors (1).

304040131273 is an equidigital number, since it uses as much as digits as its factorization.

304040131273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 28.

Adding to 304040131273 its reverse (372131040403), we get a palindrome (676171171676).

The spelling of 304040131273 in words is "three hundred four billion, forty million, one hundred thirty-one thousand, two hundred seventy-three".