211311243032401 has 32 divisors (see below), whose sum is σ = 228720264757920. Its totient is φ = 194480783917056.

The previous prime is 211311243032389. The next prime is 211311243032411. The reversal of 211311243032401 is 104230342113112.

It can be written as a sum of positive squares in 16 ways, for example, as 48789540472401 + 162521702560000 = 6984951^2 + 12748400^2 .

It is not a de Polignac number, because 211311243032401 - 2¹³ = 211311243024209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211311243032401.

It is not an unprimeable number, because it can be changed into a prime (211311243032411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 867369115 + ... + 867612703.

It is an arithmetic number, because the mean of its divisors is an integer number (7147508273685).

Almost surely, 2^{211311243032401} is an apocalyptic number.

It is an amenable number.

211311243032401 is a deficient number, since it is larger than the sum of its proper divisors (17409021725519).

211311243032401 is a wasteful number, since it uses less digits than its factorization.

211311243032401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246853.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 211311243032401 its reverse (104230342113112), we get a palindrome (315541585145513).

The spelling of 211311243032401 in words is "two hundred eleven trillion, three hundred eleven billion, two hundred forty-three million, thirty-two thousand, four hundred one".