213143112 has 96 divisors (see below), whose sum is σ = 710498880. Its totient is φ = 56211840.

The previous prime is 213143111. The next prime is 213143123. The reversal of 213143112 is 211341312.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (213143111) 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, 9714 + ... + 22817.

It is an arithmetic number, because the mean of its divisors is an integer number (7401030).

Almost surely, 2^213143112 is an apocalyptic number.

It is an amenable number.

213143112 is an abundant number, since it is smaller than the sum of its proper divisors (497355768).

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

213143112 is a wasteful number, since it uses less digits than its factorization.

213143112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32563 (or 32556 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 213143112 is about 14599.4216323798. The cubic root of 213143112 is about 597.3429844826.

Adding to 213143112 its reverse (211341312), we get a palindrome (424484424).

The spelling of 213143112 in words is "two hundred thirteen million, one hundred forty-three thousand, one hundred twelve".