212387147 has 8 divisors (see below), whose sum is σ = 243496416. Its totient is φ = 181469952.

The previous prime is 212387081. The next prime is 212387159. The reversal of 212387147 is 741783212.

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 212387147 - 2¹² = 212383051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212387347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45638 + ... + 50075.

It is an arithmetic number, because the mean of its divisors is an integer number (30437052).

Almost surely, 2^212387147 is an apocalyptic number.

212387147 is a deficient number, since it is larger than the sum of its proper divisors (31109269).

212387147 is an equidigital number, since it uses as much as digits as its factorization.

212387147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96037.

The product of its digits is 18816, while the sum is 35.

The square root of 212387147 is about 14573.5083970882. The cubic root of 212387147 is about 596.6359394862.

The spelling of 212387147 in words is "two hundred twelve million, three hundred eighty-seven thousand, one hundred forty-seven".