211131797 has 8 divisors (see below), whose sum is σ = 215200512. Its totient is φ = 207082800.

The previous prime is 211131787. The next prime is 211131829. The reversal of 211131797 is 797131112.

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

It is not a de Polignac number, because 211131797 - 2⁶ = 211131733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211131707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17672 + ... + 27102.

It is an arithmetic number, because the mean of its divisors is an integer number (26900064).

Almost surely, 2^211131797 is an apocalyptic number.

It is an amenable number.

211131797 is a deficient number, since it is larger than the sum of its proper divisors (4068715).

211131797 is an equidigital number, since it uses as much as digits as its factorization.

211131797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9859.

The product of its digits is 2646, while the sum is 32.

The square root of 211131797 is about 14530.3749779557. The cubic root of 211131797 is about 595.4581101100.

The spelling of 211131797 in words is "two hundred eleven million, one hundred thirty-one thousand, seven hundred ninety-seven".