243101531297 has 2 divisors, whose sum is σ = 243101531298. Its totient is φ = 243101531296.

The previous prime is 243101531293. The next prime is 243101531353. The reversal of 243101531297 is 792135101342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191840496016 + 51261035281 = 437996^2 + 226409^2 .

It is a cyclic number.

It is not a de Polignac number, because 243101531297 - 2² = 243101531293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243101531297.

It is not a weakly prime, because it can be changed into another prime (243101531293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121550765648 + 121550765649.

It is an arithmetic number, because the mean of its divisors is an integer number (121550765649).

Almost surely, 2^243101531297 is an apocalyptic number.

It is an amenable number.

243101531297 is a deficient number, since it is larger than the sum of its proper divisors (1).

243101531297 is an equidigital number, since it uses as much as digits as its factorization.

243101531297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 243101531297 in words is "two hundred forty-three billion, one hundred one million, five hundred thirty-one thousand, two hundred ninety-seven".