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213120212293 = 535641712841
BaseRepresentation
bin1100011001111011110…
…1000101110101000101
3202101002201021112020001
43012132331011311011
511442432233243133
6241523413441301
721253213625542
oct3063675056505
9671081245201
10213120212293
118242489295a
1235379640231
13171355905c1
14a45a7bdbc9
15582521e87d
hex319ef45d45

213120212293 has 8 divisors (see below), whose sum is σ = 217180146456. Its totient is φ = 209061715200.

The previous prime is 213120212281. The next prime is 213120212317. The reversal of 213120212293 is 392212021312.

It can be written as a sum of positive squares in 4 ways, for example, as 160090412769 + 53029799524 = 400113^2 + 230282^2 .

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 213120212293 - 217 = 213120081221 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 (213120212213) 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, 57448 + ... + 655393.

It is an arithmetic number, because the mean of its divisors is an integer number (27147518307).

Almost surely, 2213120212293 is an apocalyptic number.

It is an amenable number.

213120212293 is a deficient number, since it is larger than the sum of its proper divisors (4059934163).

213120212293 is an equidigital number, since it uses as much as digits as its factorization.

213120212293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718535.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 213120212293 in words is "two hundred thirteen billion, one hundred twenty million, two hundred twelve thousand, two hundred ninety-three".

Divisors: 1 53 5641 298973 712841 37780573 4021136081 213120212293