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214312213 = 1492934909
BaseRepresentation
bin11001100011000…
…10010100010101
3112221021012002101
430301202110111
5414330442323
633133242101
75211423643
oct1461422425
9487235071
10214312213
11aaa78a35
125b933331
133552887b
142066a193
1513c34dad
hexcc62515

214312213 has 8 divisors (see below), whose sum is σ = 216531000. Its totient is φ = 212104128.

The previous prime is 214312211. The next prime is 214312223. The reversal of 214312213 is 312213412.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 110313009 + 103999204 = 10503^2 + 10198^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 214312213 - 21 = 214312211 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 (214312211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41203 + ... + 46111.

It is an arithmetic number, because the mean of its divisors is an integer number (27066375).

Almost surely, 2214312213 is an apocalyptic number.

It is an amenable number.

214312213 is a deficient number, since it is larger than the sum of its proper divisors (2218787).

214312213 is a wasteful number, since it uses less digits than its factorization.

214312213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5351.

The product of its digits is 288, while the sum is 19.

The square root of 214312213 is about 14639.4061696505. The cubic root of 214312213 is about 598.4331461024.

Adding to 214312213 its reverse (312213412), we get a palindrome (526525625).

The spelling of 214312213 in words is "two hundred fourteen million, three hundred twelve thousand, two hundred thirteen".

Divisors: 1 149 293 4909 43657 731441 1438337 214312213