213111060 has 24 divisors (see below), whose sum is σ = 596711136. Its totient is φ = 56829600.

The previous prime is 213111043. The next prime is 213111061. The reversal of 213111060 is 60111312.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213111061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1775866 + ... + 1775985.

It is an arithmetic number, because the mean of its divisors is an integer number (24862964).

Almost surely, 2^213111060 is an apocalyptic number.

213111060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213111060 is an abundant number, since it is smaller than the sum of its proper divisors (383600076).

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

213111060 is a wasteful number, since it uses less digits than its factorization.

213111060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551863 (or 3551861 counting only the distinct ones).

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

The square root of 213111060 is about 14598.3238763907. The cubic root of 213111060 is about 597.3130405997.

Adding to 213111060 its reverse (60111312), we get a palindrome (273222372).

The spelling of 213111060 in words is "two hundred thirteen million, one hundred eleven thousand, sixty".