247213318 has 16 divisors (see below), whose sum is σ = 404858880. Its totient is φ = 112278600.

The previous prime is 247213301. The next prime is 247213331. The reversal of 247213318 is 813312742.

247213318 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247213318² = 122228849193138248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 247213318.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28543 + ... + 36181.

It is an arithmetic number, because the mean of its divisors is an integer number (25303680).

Almost surely, 2^247213318 is an apocalyptic number.

247213318 is a deficient number, since it is larger than the sum of its proper divisors (157645562).

247213318 is a wasteful number, since it uses less digits than its factorization.

247213318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9123.

The product of its digits is 8064, while the sum is 31.

The square root of 247213318 is about 15723.0187305110. The cubic root of 247213318 is about 627.6111075565.

The spelling of 247213318 in words is "two hundred forty-seven million, two hundred thirteen thousand, three hundred eighteen".