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212020031214 = 232172149327299
BaseRepresentation
bin1100010101110101100…
…0001110111011101110
3202021021001002112111200
43011131120032323232
511433204111444324
6241222313030330
721214024346535
oct3053530167356
9667231075450
10212020031214
1181a0a8645a2
12351110b53a6
1316cbb678394
14a39463531c
1557ad84eec9
hex315d60eeee

212020031214 has 72 divisors (see below), whose sum is σ = 488333172600. Its totient is φ = 66469101312.

The previous prime is 212020031213. The next prime is 212020031287. The reversal of 212020031214 is 412130020212.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020031213) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7752937 + ... + 7780235.

It is an arithmetic number, because the mean of its divisors is an integer number (6782405175).

Almost surely, 2212020031214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212020031214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244166586300).

212020031214 is an abundant number, since it is smaller than the sum of its proper divisors (276313141386).

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

212020031214 is a wasteful number, since it uses less digits than its factorization.

212020031214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28834 (or 28814 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 212020031214 its reverse (412130020212), we get a palindrome (624150051426).

The spelling of 212020031214 in words is "two hundred twelve billion, twenty million, thirty-one thousand, two hundred fourteen".

Divisors: 1 2 3 6 9 17 18 34 51 102 153 289 306 578 867 1493 1734 2601 2986 4479 5202 8958 13437 25381 26874 27299 50762 54598 76143 81897 152286 163794 228429 245691 431477 456858 464083 491382 862954 928166 1294431 1392249 2588862 2784498 3883293 4176747 7766586 7889411 8353494 15778822 23668233 40757407 47336466 71004699 81514814 122272221 142009398 244544442 366816663 692875919 733633326 1385751838 2078627757 4157255514 6235883271 11778890623 12471766542 23557781246 35336671869 70673343738 106010015607 212020031214