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22301231312 = 241781989821
BaseRepresentation
bin10100110001010000…
…011100100011010000
32010120012200221011002
4110301100130203100
5331133103400222
614124532441132
71416434224043
oct246120344320
963505627132
1022301231312
119504511188
1243a47791a8
132145391379
141117b94c5a
158a7cd2392
hex53141c8d0

22301231312 has 20 divisors (see below), whose sum is σ = 45750320676. Its totient is φ = 10494696960.

The previous prime is 22301231291. The next prime is 22301231339. The reversal of 22301231312 is 21313210322.

It can be written as a sum of positive squares in 2 ways, for example, as 7156483216 + 15144748096 = 84596^2 + 123064^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40994639 + ... + 40995182.

Almost surely, 222301231312 is an apocalyptic number.

It is an amenable number.

22301231312 is an abundant number, since it is smaller than the sum of its proper divisors (23449089364).

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

22301231312 is a wasteful number, since it uses less digits than its factorization.

22301231312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81989846 (or 81989840 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 22301231312 its reverse (21313210322), we get a palindrome (43614441634).

The spelling of 22301231312 in words is "twenty-two billion, three hundred one million, two hundred thirty-one thousand, three hundred twelve".

Divisors: 1 2 4 8 16 17 34 68 136 272 81989821 163979642 327959284 655918568 1311837136 1393826957 2787653914 5575307828 11150615656 22301231312