247131 has 16 divisors (see below), whose sum is σ = 373920. Its totient is φ = 163296.

The previous prime is 247099. The next prime is 247141. The reversal of 247131 is 131742.

It is not a de Polignac number, because 247131 - 2⁵ = 247099 is a prime.

It is a super-2 number, since 2×247131² = 122147462322, which contains 22 as substring.

It is a nialpdrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 247131.

It is not an unprimeable number, because it can be changed into a prime (247141) 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 in 15 ways as a sum of consecutive naturals, for example, 2131 + ... + 2243.

It is an arithmetic number, because the mean of its divisors is an integer number (23370).

2²⁴⁷¹³¹ is an apocalyptic number.

247131 is a deficient number, since it is larger than the sum of its proper divisors (126789).

247131 is an frugal number, since it uses more digits than its factorization.

247131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 116 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 247131 is about 497.1227212671. The cubic root of 247131 is about 62.7541438405.

Adding to 247131 its reverse (131742), we get a palindrome (378873).

It can be divided in two parts, 247 and 131, that added together give a triangular number (378 = T₂₇).

The spelling of 247131 in words is "two hundred forty-seven thousand, one hundred thirty-one".