213213431441 has 2 divisors, whose sum is σ = 213213431442. Its totient is φ = 213213431440.

The previous prime is 213213431419. The next prime is 213213431447. The reversal of 213213431441 is 144134312312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140478038416 + 72735393025 = 374804^2 + 269695^2 .

It is a cyclic number.

It is not a de Polignac number, because 213213431441 - 2⁶ = 213213431377 is a prime.

It is not a weakly prime, because it can be changed into another prime (213213431447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106606715720 + 106606715721.

It is an arithmetic number, because the mean of its divisors is an integer number (106606715721).

Almost surely, 2^213213431441 is an apocalyptic number.

It is an amenable number.

213213431441 is a deficient number, since it is larger than the sum of its proper divisors (1).

213213431441 is an equidigital number, since it uses as much as digits as its factorization.

213213431441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 29.

Adding to 213213431441 its reverse (144134312312), we get a palindrome (357347743753).

The spelling of 213213431441 in words is "two hundred thirteen billion, two hundred thirteen million, four hundred thirty-one thousand, four hundred forty-one".