211312231230 has 64 divisors (see below), whose sum is σ = 513779189760. Its totient is φ = 55613865216.

The previous prime is 211312231217. The next prime is 211312231231. The reversal of 211312231230 is 32132213112.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 211312231197 and 211312231206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211312231231) 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, 6223279 + ... + 6257141.

It is an arithmetic number, because the mean of its divisors is an integer number (8027799840).

Almost surely, 2^211312231230 is an apocalyptic number.

211312231230 is an abundant number, since it is smaller than the sum of its proper divisors (302466958530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211312231230 is a wasteful number, since it uses less digits than its factorization.

211312231230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36585.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 211312231230 its reverse (32132213112), we get a palindrome (243444444342).

The spelling of 211312231230 in words is "two hundred eleven billion, three hundred twelve million, two hundred thirty-one thousand, two hundred thirty".