213342111 has 12 divisors (see below), whose sum is σ = 316489992. Its totient is φ = 138383856.

The previous prime is 213342109. The next prime is 213342113. The reversal of 213342111 is 111243312.

213342111 is a `hidden beast` number, since 213 + 342 + 111 = 666.

It is an interprime number because it is at equal distance from previous prime (213342109) and next prime (213342113).

It is not a de Polignac number, because 213342111 - 2¹ = 213342109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213342113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 320001 + ... + 320666.

It is an arithmetic number, because the mean of its divisors is an integer number (26374166).

Almost surely, 2^213342111 is an apocalyptic number.

213342111 is a deficient number, since it is larger than the sum of its proper divisors (103147881).

213342111 is a wasteful number, since it uses less digits than its factorization.

213342111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640710 (or 640707 counting only the distinct ones).

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

The square root of 213342111 is about 14606.2353465909. The cubic root of 213342111 is about 597.5288278196.

Adding to 213342111 its reverse (111243312), we get a palindrome (324585423).

It can be divided in two parts, 2133 and 42111, that added together give a palindrome (44244).

The spelling of 213342111 in words is "two hundred thirteen million, three hundred forty-two thousand, one hundred eleven".