243213888053 has 2 divisors, whose sum is σ = 243213888054. Its totient is φ = 243213888052.

The previous prime is 243213888041. The next prime is 243213888097. The reversal of 243213888053 is 350888312342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217970398129 + 25243489924 = 466873^2 + 158882^2 .

It is a cyclic number.

It is not a de Polignac number, because 243213888053 - 2⁶ = 243213887989 is a prime.

It is a super-2 number, since 2×243213888053² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243213887989 and 243213888007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243213888023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121606944026 + 121606944027.

It is an arithmetic number, because the mean of its divisors is an integer number (121606944027).

Almost surely, 2^243213888053 is an apocalyptic number.

It is an amenable number.

243213888053 is a deficient number, since it is larger than the sum of its proper divisors (1).

243213888053 is an equidigital number, since it uses as much as digits as its factorization.

243213888053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1105920, while the sum is 47.

The spelling of 243213888053 in words is "two hundred forty-three billion, two hundred thirteen million, eight hundred eighty-eight thousand, fifty-three".