213311112 has 48 divisors (see below), whose sum is σ = 620346960. Its totient is φ = 60945696.

The previous prime is 213311101. The next prime is 213311113. The reversal of 213311112 is 211113312.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 213311091 and 213311100.

It is not an unprimeable number, because it can be changed into a prime (213311113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89518 + ... + 91869.

It is an arithmetic number, because the mean of its divisors is an integer number (12923895).

Almost surely, 2^213311112 is an apocalyptic number.

It is an amenable number.

213311112 is an abundant number, since it is smaller than the sum of its proper divisors (407035848).

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

213311112 is a wasteful number, since it uses less digits than its factorization.

213311112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181410 (or 181399 counting only the distinct ones).

The product of its digits is 36, while the sum is 15.

The square root of 213311112 is about 14605.1741516491. The cubic root of 213311112 is about 597.4998857396.

Adding to 213311112 its reverse (211113312), we get a palindrome (424424424).

It can be divided in two parts, 21 and 3311112, that added together give a palindrome (3311133).

The spelling of 213311112 in words is "two hundred thirteen million, three hundred eleven thousand, one hundred twelve".