247313212 has 24 divisors (see below), whose sum is σ = 459599616. Its totient is φ = 116041728.

The previous prime is 247313203. The next prime is 247313219. The reversal of 247313212 is 212313742.

It is a happy number.

It is a super-2 number, since 2×247313212² = 122327649659513888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247313219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18853 + ... + 29155.

It is an arithmetic number, because the mean of its divisors is an integer number (19149984).

Almost surely, 2^247313212 is an apocalyptic number.

It is an amenable number.

247313212 is a deficient number, since it is larger than the sum of its proper divisors (212286404).

247313212 is a wasteful number, since it uses less digits than its factorization.

247313212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10677 (or 10675 counting only the distinct ones).

The product of its digits is 2016, while the sum is 25.

The square root of 247313212 is about 15726.1950897221. The cubic root of 247313212 is about 627.6956312408.

Adding to 247313212 its reverse (212313742), we get a palindrome (459626954).

The spelling of 247313212 in words is "two hundred forty-seven million, three hundred thirteen thousand, two hundred twelve".