247937213 has 8 divisors (see below), whose sum is σ = 261247200. Its totient is φ = 234653328.

The previous prime is 247937189. The next prime is 247937227. The reversal of 247937213 is 312739742.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 247937213 - 2⁸ = 247936957 is a prime.

It is a super-2 number, since 2×247937213² = 122945723180414738, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247937243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14798 + ... + 26736.

It is an arithmetic number, because the mean of its divisors is an integer number (32655900).

Almost surely, 2^247937213 is an apocalyptic number.

It is an amenable number.

247937213 is a deficient number, since it is larger than the sum of its proper divisors (13309987).

247937213 is a wasteful number, since it uses less digits than its factorization.

247937213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13051.

The product of its digits is 63504, while the sum is 38.

The square root of 247937213 is about 15746.0221325896. The cubic root of 247937213 is about 628.2231050712.

The spelling of 247937213 in words is "two hundred forty-seven million, nine hundred thirty-seven thousand, two hundred thirteen".