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212115123293 = 6431738718973
BaseRepresentation
bin1100010110001100001…
…0111110110001011101
3202021111200000201022112
43011203002332301131
511433402432421133
6241235551123405
721216260541113
oct3054302766135
9667450021275
10212115123293
1181a59503697
1235138b13565
1317005290c98
14a3a3109ab3
1557b6d85648
hex31630bec5d

212115123293 has 8 divisors (see below), whose sum is σ = 212468423328. Its totient is φ = 211761897264.

The previous prime is 212115123257. The next prime is 212115123301. The reversal of 212115123293 is 392321511212.

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 212115123293 - 26 = 212115123229 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 (212115128293) 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, 11170355 + ... + 11189327.

It is an arithmetic number, because the mean of its divisors is an integer number (26558552916).

Almost surely, 2212115123293 is an apocalyptic number.

It is an amenable number.

212115123293 is a deficient number, since it is larger than the sum of its proper divisors (353300035).

212115123293 is a wasteful number, since it uses less digits than its factorization.

212115123293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37003.

The product of its digits is 6480, while the sum is 32.

The spelling of 212115123293 in words is "two hundred twelve billion, one hundred fifteen million, one hundred twenty-three thousand, two hundred ninety-three".

Divisors: 1 643 17387 18973 11179841 12199639 329883551 212115123293