211020031349 has 2 divisors, whose sum is σ = 211020031350. Its totient is φ = 211020031348.

The previous prime is 211020031267. The next prime is 211020031363. The reversal of 211020031349 is 943130020112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188306527249 + 22713504100 = 433943^2 + 150710^2 .

It is a cyclic number.

It is not a de Polignac number, because 211020031349 - 2¹⁶ = 211019965813 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211020031399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105510015674 + 105510015675.

It is an arithmetic number, because the mean of its divisors is an integer number (105510015675).

Almost surely, 2^211020031349 is an apocalyptic number.

It is an amenable number.

211020031349 is a deficient number, since it is larger than the sum of its proper divisors (1).

211020031349 is an equidigital number, since it uses as much as digits as its factorization.

211020031349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 211020031349 in words is "two hundred eleven billion, twenty million, thirty-one thousand, three hundred forty-nine".