243132212 has 6 divisors (see below), whose sum is σ = 425481378. Its totient is φ = 121566104.

The previous prime is 243132199. The next prime is 243132223. The reversal of 243132212 is 212231342.

It can be written as a sum of positive squares in only one way, i.e., 193655056 + 49477156 = 13916^2 + 7034^2 .

It is a super-2 number, since 2×243132212² = 118226545024025888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30391523 + ... + 30391530.

It is an arithmetic number, because the mean of its divisors is an integer number (70913563).

Almost surely, 2^243132212 is an apocalyptic number.

It is an amenable number.

243132212 is a deficient number, since it is larger than the sum of its proper divisors (182349166).

243132212 is a wasteful number, since it uses less digits than its factorization.

243132212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60783057 (or 60783055 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 243132212 is about 15592.6973933313. The cubic root of 243132212 is about 624.1383000765.

Adding to 243132212 its reverse (212231342), we get a palindrome (455363554).

It can be divided in two parts, 2431 and 32212, that added together give a palindrome (34643).

The spelling of 243132212 in words is "two hundred forty-three million, one hundred thirty-two thousand, two hundred twelve".