211461430231 has 8 divisors (see below), whose sum is σ = 211777070400. Its totient is φ = 211145975040.

The previous prime is 211461430223. The next prime is 211461430289. The reversal of 211461430231 is 132034164112.

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 211461430231 - 2³ = 211461430223 is a prime.

It is a super-2 number, since 2×211461430231² (a number of 23 digits) contains 22 as substring.

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 211461430231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211461430331) 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, 2332315 + ... + 2421283.

It is an arithmetic number, because the mean of its divisors is an integer number (26472133800).

Almost surely, 2^211461430231 is an apocalyptic number.

211461430231 is a deficient number, since it is larger than the sum of its proper divisors (315640169).

211461430231 is an equidigital number, since it uses as much as digits as its factorization.

211461430231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92489.

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

Adding to 211461430231 its reverse (132034164112), we get a palindrome (343495594343).

The spelling of 211461430231 in words is "two hundred eleven billion, four hundred sixty-one million, four hundred thirty thousand, two hundred thirty-one".