212534247 has 8 divisors (see below), whose sum is σ = 298293760. Its totient is φ = 134232120.

The previous prime is 212534239. The next prime is 212534249. The reversal of 212534247 is 742435212.

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

It is not a de Polignac number, because 212534247 - 2³ = 212534239 is a prime.

It is a super-2 number, since 2×212534247² = 90341612295714018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212534249) 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, 1864279 + ... + 1864392.

It is an arithmetic number, because the mean of its divisors is an integer number (37286720).

Almost surely, 2^212534247 is an apocalyptic number.

212534247 is a deficient number, since it is larger than the sum of its proper divisors (85759513).

212534247 is a wasteful number, since it uses less digits than its factorization.

212534247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3728693.

The product of its digits is 13440, while the sum is 30.

The square root of 212534247 is about 14578.5543521983. The cubic root of 212534247 is about 596.7736516682.

Adding to 212534247 its reverse (742435212), we get a palindrome (954969459).

The spelling of 212534247 in words is "two hundred twelve million, five hundred thirty-four thousand, two hundred forty-seven".