243212204351 has 4 divisors (see below), whose sum is σ = 243217988400. Its totient is φ = 243206420304.

The previous prime is 243212204317. The next prime is 243212204359. The reversal of 243212204351 is 153402212342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 153402212342 = 2 ⋅76701106171.

It is a cyclic number.

It is not a de Polignac number, because 243212204351 - 2¹⁰ = 243212203327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243212204359) 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, 2828486 + ... + 2913203.

It is an arithmetic number, because the mean of its divisors is an integer number (60804497100).

Almost surely, 2^243212204351 is an apocalyptic number.

243212204351 is a deficient number, since it is larger than the sum of its proper divisors (5784049).

243212204351 is an equidigital number, since it uses as much as digits as its factorization.

243212204351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5784048.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 243212204351 its reverse (153402212342), we get a palindrome (396614416693).

The spelling of 243212204351 in words is "two hundred forty-three billion, two hundred twelve million, two hundred four thousand, three hundred fifty-one".