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2312230220 = 225829139459
BaseRepresentation
bin1000100111010001…
…1101010101001100
312222010212110120022
42021310131111030
514213412331340
61021235041312
7111204426656
oct21164352514
95863773508
102312230220
11a87214873
12546440238
132ab067b81
1417d1336d6
15d7eda3b5
hex89d1d54c

2312230220 has 24 divisors (see below), whose sum is σ = 4861575600. Its totient is φ = 923769792.

The previous prime is 2312230187. The next prime is 2312230229. The reversal of 2312230220 is 220322132.

It is not an unprimeable number, because it can be changed into a prime (2312230229) 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, 53150 + ... + 86309.

It is an arithmetic number, because the mean of its divisors is an integer number (202565650).

Almost surely, 22312230220 is an apocalyptic number.

2312230220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2312230220 is an abundant number, since it is smaller than the sum of its proper divisors (2549345380).

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

2312230220 is a wasteful number, since it uses less digits than its factorization.

2312230220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140297 (or 140295 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2312230220 is about 48085.6550334921. The cubic root of 2312230220 is about 1322.3416919985.

Adding to 2312230220 its reverse (220322132), we get a palindrome (2532552352).

The spelling of 2312230220 in words is "two billion, three hundred twelve million, two hundred thirty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 829 1658 3316 4145 8290 16580 139459 278918 557836 697295 1394590 2789180 115611511 231223022 462446044 578057555 1156115110 2312230220