213912903361097 has 2 divisors, whose sum is σ = 213912903361098. Its totient is φ = 213912903361096.

The previous prime is 213912903361093. The next prime is 213912903361121. The reversal of 213912903361097 is 790163309219312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160123235148361 + 53789668212736 = 12653981^2 + 7334144^2 .

It is a cyclic number.

It is not a de Polignac number, because 213912903361097 - 2² = 213912903361093 is a prime.

It is not a weakly prime, because it can be changed into another prime (213912903361093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106956451680548 + 106956451680549.

It is an arithmetic number, because the mean of its divisors is an integer number (106956451680549).

Almost surely, 2^{213912903361097} is an apocalyptic number.

It is an amenable number.

213912903361097 is a deficient number, since it is larger than the sum of its proper divisors (1).

213912903361097 is an equidigital number, since it uses as much as digits as its factorization.

213912903361097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3306744, while the sum is 56.

The spelling of 213912903361097 in words is "two hundred thirteen trillion, nine hundred twelve billion, nine hundred three million, three hundred sixty-one thousand, ninety-seven".