214531213 has 4 divisors (see below), whose sum is σ = 231033628. Its totient is φ = 198028800.

The previous prime is 214531199. The next prime is 214531259. The reversal of 214531213 is 312135412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26347689 + 188183524 = 5133^2 + 13718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214531213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214531283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8251188 + ... + 8251213.

It is an arithmetic number, because the mean of its divisors is an integer number (57758407).

Almost surely, 2^214531213 is an apocalyptic number.

It is an amenable number.

214531213 is a deficient number, since it is larger than the sum of its proper divisors (16502415).

214531213 is a wasteful number, since it uses less digits than its factorization.

214531213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16502414.

The product of its digits is 720, while the sum is 22.

The square root of 214531213 is about 14646.8840713648. The cubic root of 214531213 is about 598.6369177266.

Adding to 214531213 its reverse (312135412), we get a palindrome (526666625).

The spelling of 214531213 in words is "two hundred fourteen million, five hundred thirty-one thousand, two hundred thirteen".