247838113 has 4 divisors (see below), whose sum is σ = 247911088. Its totient is φ = 247765140.

The previous prime is 247838027. The next prime is 247838117. The reversal of 247838113 is 311838742.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 311838742 = 2 ⋅155919371.

It is a cyclic number.

It is not a de Polignac number, because 247838113 - 2²⁵ = 214283681 is a prime.

It is a super-2 number, since 2×247838113² = 122847460510801538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247838117) 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, 31131 + ... + 38272.

It is an arithmetic number, because the mean of its divisors is an integer number (61977772).

Almost surely, 2^247838113 is an apocalyptic number.

It is an amenable number.

247838113 is a deficient number, since it is larger than the sum of its proper divisors (72975).

247838113 is an equidigital number, since it uses as much as digits as its factorization.

247838113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72974.

The product of its digits is 32256, while the sum is 37.

The square root of 247838113 is about 15742.8749915636. The cubic root of 247838113 is about 628.1393940845.

It can be divided in two parts, 24783 and 8113, that added together give a triangular number (32896 = T₂₅₆).

The spelling of 247838113 in words is "two hundred forty-seven million, eight hundred thirty-eight thousand, one hundred thirteen".