212313634 has 8 divisors (see below), whose sum is σ = 342968220. Its totient is φ = 97990896.

The previous prime is 212313623. The next prime is 212313649. The reversal of 212313634 is 436313212.

It can be written as a sum of positive squares in 2 ways, for example, as 207273609 + 5040025 = 14397^2 + 2245^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 212313599 and 212313608.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4082929 + ... + 4082980.

Almost surely, 2^212313634 is an apocalyptic number.

212313634 is a deficient number, since it is larger than the sum of its proper divisors (130654586).

212313634 is a wasteful number, since it uses less digits than its factorization.

212313634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8165924.

The product of its digits is 2592, while the sum is 25.

The square root of 212313634 is about 14570.9860338963. The cubic root of 212313634 is about 596.5670942040.

Adding to 212313634 its reverse (436313212), we get a palindrome (648626846).

It can be divided in two parts, 2123 and 13634, that multiplied together give a palindrome (28944982).

The spelling of 212313634 in words is "two hundred twelve million, three hundred thirteen thousand, six hundred thirty-four".