213231111103289 has 2 divisors, whose sum is σ = 213231111103290. Its totient is φ = 213231111103288.

The previous prime is 213231111103237. The next prime is 213231111103447. The reversal of 213231111103289 is 982301111132312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155578722534400 + 57652388568889 = 12473120^2 + 7592917^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213231111103289 is a prime.

It is not a weakly prime, because it can be changed into another prime (213231171103289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106615555551644 + 106615555551645.

It is an arithmetic number, because the mean of its divisors is an integer number (106615555551645).

Almost surely, 2^{213231111103289} is an apocalyptic number.

It is an amenable number.

213231111103289 is a deficient number, since it is larger than the sum of its proper divisors (1).

213231111103289 is an equidigital number, since it uses as much as digits as its factorization.

213231111103289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 38.

The spelling of 213231111103289 in words is "two hundred thirteen trillion, two hundred thirty-one billion, one hundred eleven million, one hundred three thousand, two hundred eighty-nine".