211311013123 has 8 divisors (see below), whose sum is σ = 242284942592. Its totient is φ = 180533744136.

The previous prime is 211311013097. The next prime is 211311013159. The reversal of 211311013123 is 321310113112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211311013123 - 2⁹ = 211311012611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211311013123.

It is not an unprimeable number, because it can be changed into a prime (211311313123) 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 in 7 ways as a sum of consecutive naturals, for example, 49162815 + ... + 49167112.

It is an arithmetic number, because the mean of its divisors is an integer number (30285617824).

Almost surely, 2^211311013123 is an apocalyptic number.

211311013123 is a deficient number, since it is larger than the sum of its proper divisors (30973929469).

211311013123 is an equidigital number, since it uses as much as digits as its factorization.

211311013123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98330241.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 211311013123 its reverse (321310113112), we get a palindrome (532621126235).

The spelling of 211311013123 in words is "two hundred eleven billion, three hundred eleven million, thirteen thousand, one hundred twenty-three".