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212313204 = 223317197587
BaseRepresentation
bin11001010011110…
…10010001110100
3112210111121222000
430221322101310
5413323010304
633022335300
75155426635
oct1451722164
9483447860
10212313204
11a9933064
125b12a530
1334ca8a1c
14202a988c
151398c939
hexca7a474

212313204 has 96 divisors (see below), whose sum is σ = 586776960. Its totient is φ = 66157056.

The previous prime is 212313197. The next prime is 212313251. The reversal of 212313204 is 402313212.

212313204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 361399 + ... + 361985.

It is an arithmetic number, because the mean of its divisors is an integer number (6112260).

Almost surely, 2212313204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212313204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293388480).

212313204 is an abundant number, since it is smaller than the sum of its proper divisors (374463756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212313204 is a wasteful number, since it uses less digits than its factorization.

212313204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 212313204 is about 14570.9712785387. The cubic root of 212313204 is about 596.5666914601.

Adding to 212313204 its reverse (402313212), we get a palindrome (614626416).

The spelling of 212313204 in words is "two hundred twelve million, three hundred thirteen thousand, two hundred four".

Divisors: 1 2 3 4 6 9 12 17 18 27 34 36 51 54 68 102 108 153 197 204 306 394 459 587 591 612 788 918 1174 1182 1761 1773 1836 2348 2364 3349 3522 3546 5283 5319 6698 7044 7092 9979 10047 10566 10638 13396 15849 19958 20094 21132 21276 29937 30141 31698 39916 40188 59874 60282 63396 89811 90423 115639 119748 120564 179622 180846 231278 269433 346917 359244 361692 462556 538866 693834 1040751 1077732 1387668 1965863 2081502 3122253 3931726 4163004 5897589 6244506 7863452 11795178 12489012 17692767 23590356 35385534 53078301 70771068 106156602 212313204