243504802231 has 2 divisors, whose sum is σ = 243504802232. Its totient is φ = 243504802230.

The previous prime is 243504802217. The next prime is 243504802253. The reversal of 243504802231 is 132208405342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243504802231 - 2⁷ = 243504802103 is a prime.

It is a super-2 number, since 2×243504802231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243504802201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121752401115 + 121752401116.

It is an arithmetic number, because the mean of its divisors is an integer number (121752401116).

Almost surely, 2^243504802231 is an apocalyptic number.

243504802231 is a deficient number, since it is larger than the sum of its proper divisors (1).

243504802231 is an equidigital number, since it uses as much as digits as its factorization.

243504802231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 34.

The spelling of 243504802231 in words is "two hundred forty-three billion, five hundred four million, eight hundred two thousand, two hundred thirty-one".