305796137 has 2 divisors, whose sum is σ = 305796138. Its totient is φ = 305796136.

The previous prime is 305796133. The next prime is 305796173. The reversal of 305796137 is 731697503.

Together with next prime (305796173) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278589481 + 27206656 = 16691^2 + 5216^2 .

It is a cyclic number.

It is not a de Polignac number, because 305796137 - 2² = 305796133 is a prime.

It is a super-2 number, since 2×305796137² = 187022554808245538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 305796094 and 305796103.

It is not a weakly prime, because it can be changed into another prime (305796133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152898068 + 152898069.

It is an arithmetic number, because the mean of its divisors is an integer number (152898069).

Almost surely, 2^305796137 is an apocalyptic number.

It is an amenable number.

305796137 is a deficient number, since it is larger than the sum of its proper divisors (1).

305796137 is an equidigital number, since it uses as much as digits as its factorization.

305796137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 119070, while the sum is 41.

The square root of 305796137 is about 17487.0276776815. The cubic root of 305796137 is about 673.7167293105.

The spelling of 305796137 in words is "three hundred five million, seven hundred ninety-six thousand, one hundred thirty-seven".