211031453 has 2 divisors, whose sum is σ = 211031454. Its totient is φ = 211031452.

The previous prime is 211031419. The next prime is 211031479. The reversal of 211031453 is 354130112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161849284 + 49182169 = 12722^2 + 7013^2 .

It is a cyclic number.

It is not a de Polignac number, because 211031453 - 2²² = 206837149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211031413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105515726 + 105515727.

It is an arithmetic number, because the mean of its divisors is an integer number (105515727).

Almost surely, 2^211031453 is an apocalyptic number.

It is an amenable number.

211031453 is a deficient number, since it is larger than the sum of its proper divisors (1).

211031453 is an equidigital number, since it uses as much as digits as its factorization.

211031453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 211031453 is about 14526.9216628989. The cubic root of 211031453 is about 595.3637612754.

Adding to 211031453 its reverse (354130112), we get a palindrome (565161565).

The spelling of 211031453 in words is "two hundred eleven million, thirty-one thousand, four hundred fifty-three".