243040212131322 has 16 divisors (see below), whose sum is σ = 486083619721440. Its totient is φ = 81012871467312.

The previous prime is 243040212131261. The next prime is 243040212131323. The reversal of 243040212131322 is 223131212040342.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 243040212131322.

It is not an unprimeable number, because it can be changed into a prime (243040212131323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132154797 + ... + 133981232.

It is an arithmetic number, because the mean of its divisors is an integer number (30380226232590).

Almost surely, 2^{243040212131322} is an apocalyptic number.

243040212131322 is an abundant number, since it is smaller than the sum of its proper divisors (243043407590118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243040212131322 is a wasteful number, since it uses less digits than its factorization.

243040212131322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266288237.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 243040212131322 its reverse (223131212040342), we get a palindrome (466171424171664).

The spelling of 243040212131322 in words is "two hundred forty-three trillion, forty billion, two hundred twelve million, one hundred thirty-one thousand, three hundred twenty-two".