247038317 has 2 divisors, whose sum is σ = 247038318. Its totient is φ = 247038316.

The previous prime is 247038299. The next prime is 247038347. The reversal of 247038317 is 713830742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224580196 + 22458121 = 14986^2 + 4739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247038317 is a prime.

It is a super-2 number, since 2×247038317² = 122055860132384978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247038347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123519158 + 123519159.

It is an arithmetic number, because the mean of its divisors is an integer number (123519159).

Almost surely, 2^247038317 is an apocalyptic number.

It is an amenable number.

247038317 is a deficient number, since it is larger than the sum of its proper divisors (1).

247038317 is an equidigital number, since it uses as much as digits as its factorization.

247038317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 247038317 is about 15717.4526243918. The cubic root of 247038317 is about 627.4629784034.

The spelling of 247038317 in words is "two hundred forty-seven million, thirty-eight thousand, three hundred seventeen".