243241025231 has 4 divisors (see below), whose sum is σ = 249815107032. Its totient is φ = 236666943432.

The previous prime is 243241025117. The next prime is 243241025233. The reversal of 243241025231 is 132520142342.

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

It is a cyclic number.

It is not a de Polignac number, because 243241025231 - 2¹⁴ = 243241008847 is a prime.

It is a super-2 number, since 2×243241025231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243241025194 and 243241025203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243241025233) 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, 3287040845 + ... + 3287040918.

It is an arithmetic number, because the mean of its divisors is an integer number (62453776758).

Almost surely, 2^243241025231 is an apocalyptic number.

243241025231 is a deficient number, since it is larger than the sum of its proper divisors (6574081801).

243241025231 is an equidigital number, since it uses as much as digits as its factorization.

243241025231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6574081800.

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

Adding to 243241025231 its reverse (132520142342), we get a palindrome (375761167573).

The spelling of 243241025231 in words is "two hundred forty-three billion, two hundred forty-one million, twenty-five thousand, two hundred thirty-one".