211230031218 has 48 divisors (see below), whose sum is σ = 450651047040. Its totient is φ = 65990842624.

The previous prime is 211230031169. The next prime is 211230031219. The reversal of 211230031218 is 812130032112.

It is not an unprimeable number, because it can be changed into a prime (211230031219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159580 + ... + 669272.

It is an arithmetic number, because the mean of its divisors is an integer number (9388563480).

Almost surely, 2^211230031218 is an apocalyptic number.

211230031218 is an abundant number, since it is smaller than the sum of its proper divisors (239421015822).

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

211230031218 is a wasteful number, since it uses less digits than its factorization.

211230031218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509971 (or 509954 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 211230031218 in words is "two hundred eleven billion, two hundred thirty million, thirty-one thousand, two hundred eighteen".