308204047 has 4 divisors (see below), whose sum is σ = 308504016. Its totient is φ = 307904080.

The previous prime is 308204027. The next prime is 308204059. The reversal of 308204047 is 740402803.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740402803 = 7 ⋅105771829.

It is a cyclic number.

It is not a de Polignac number, because 308204047 - 2¹⁹ = 307679759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308204027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148438 + ... + 150499.

It is an arithmetic number, because the mean of its divisors is an integer number (77126004).

Almost surely, 2^308204047 is an apocalyptic number.

308204047 is a deficient number, since it is larger than the sum of its proper divisors (299969).

308204047 is a wasteful number, since it uses less digits than its factorization.

308204047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299968.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 308204047 is about 17555.7411407209. The cubic root of 308204047 is about 675.4804422270.

The spelling of 308204047 in words is "three hundred eight million, two hundred four thousand, forty-seven".