243021142204313 has 4 divisors (see below), whose sum is σ = 265113973313808. Its totient is φ = 220928311094820.

The previous prime is 243021142204307. The next prime is 243021142204319. The reversal of 243021142204313 is 313402241120342.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (243021142204307) and next prime (243021142204319).

It is a cyclic number.

It is not a de Polignac number, because 243021142204313 - 2¹² = 243021142200217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243021142204313.

It is not an unprimeable number, because it can be changed into a prime (243021142204319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11046415554731 + ... + 11046415554752.

It is an arithmetic number, because the mean of its divisors is an integer number (66278493328452).

Almost surely, 2^{243021142204313} is an apocalyptic number.

It is an amenable number.

243021142204313 is a deficient number, since it is larger than the sum of its proper divisors (22092831109495).

243021142204313 is a wasteful number, since it uses less digits than its factorization.

243021142204313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22092831109494.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 243021142204313 its reverse (313402241120342), we get a palindrome (556423383324655).

The spelling of 243021142204313 in words is "two hundred forty-three trillion, twenty-one billion, one hundred forty-two million, two hundred four thousand, three hundred thirteen".