212344546 has 4 divisors (see below), whose sum is σ = 318516822. Its totient is φ = 106172272.

The previous prime is 212344493. The next prime is 212344549. The reversal of 212344546 is 645443212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 116402521 + 95942025 = 10789^2 + 9795^2 .

It is a super-2 number, since 2×212344546² = 90180412431892232, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (212344549) 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 as a sum of consecutive naturals, namely, 53086135 + ... + 53086138.

Almost surely, 2^212344546 is an apocalyptic number.

212344546 is a deficient number, since it is larger than the sum of its proper divisors (106172276).

212344546 is a wasteful number, since it uses less digits than its factorization.

212344546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106172275.

The product of its digits is 23040, while the sum is 31.

The square root of 212344546 is about 14572.0467333865. The cubic root of 212344546 is about 596.5960453783.

Adding to 212344546 its reverse (645443212), we get a palindrome (857787758).

The spelling of 212344546 in words is "two hundred twelve million, three hundred forty-four thousand, five hundred forty-six".