247343247 has 16 divisors (see below), whose sum is σ = 368016480. Its totient is φ = 164183616.

The previous prime is 247343231. The next prime is 247343249. The reversal of 247343247 is 742343742.

It is not a de Polignac number, because 247343247 - 2⁴ = 247343231 is a prime.

It is a super-2 number, since 2×247343247² = 122357363673006018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247343249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13368 + ... + 25949.

It is an arithmetic number, because the mean of its divisors is an integer number (23001030).

Almost surely, 2^247343247 is an apocalyptic number.

247343247 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

247343247 is a deficient number, since it is larger than the sum of its proper divisors (120673233).

247343247 is a wasteful number, since it uses less digits than its factorization.

247343247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39559 (or 39553 counting only the distinct ones).

The product of its digits is 112896, while the sum is 36.

The square root of 247343247 is about 15727.1499961055. The cubic root of 247343247 is about 627.7210404173.

Adding to 247343247 its reverse (742343742), we get a palindrome (989686989).

The spelling of 247343247 in words is "two hundred forty-seven million, three hundred forty-three thousand, two hundred forty-seven".