305240520047 has 2 divisors, whose sum is σ = 305240520048. Its totient is φ = 305240520046.

The previous prime is 305240520031. The next prime is 305240520061. The reversal of 305240520047 is 740025042503.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 305240520047 - 2⁴ = 305240520031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 305240519995 and 305240520022.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305240520007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152620260023 + 152620260024.

It is an arithmetic number, because the mean of its divisors is an integer number (152620260024).

Almost surely, 2^305240520047 is an apocalyptic number.

305240520047 is a deficient number, since it is larger than the sum of its proper divisors (1).

305240520047 is an equidigital number, since it uses as much as digits as its factorization.

305240520047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 32.

The spelling of 305240520047 in words is "three hundred five billion, two hundred forty million, five hundred twenty thousand, forty-seven".