212623247 has 8 divisors (see below), whose sum is σ = 225506400. Its totient is φ = 200043360.

The previous prime is 212623241. The next prime is 212623259. The reversal of 212623247 is 742326212.

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 212623247 - 2²⁴ = 195846031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212623241) 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, 74372 + ... + 77177.

It is an arithmetic number, because the mean of its divisors is an integer number (28188300).

Almost surely, 2^212623247 is an apocalyptic number.

212623247 is a deficient number, since it is larger than the sum of its proper divisors (12883153).

212623247 is a wasteful number, since it uses less digits than its factorization.

212623247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151633.

The product of its digits is 8064, while the sum is 29.

The square root of 212623247 is about 14581.6064615666. The cubic root of 212623247 is about 596.8569409008.

Adding to 212623247 its reverse (742326212), we get a palindrome (954949459).

The spelling of 212623247 in words is "two hundred twelve million, six hundred twenty-three thousand, two hundred forty-seven".