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210312200231 = 724292085719
BaseRepresentation
bin1100001111011110010…
…1011000000000100111
3202002212000111201211022
43003313211120000213
511421204410401411
6240341024201355
721123506130500
oct3036745300047
9662760451738
10210312200231
1181213832931
123491516925b
1316aa88b95c3
14a2718b1ba7
15570d950edb
hex30f7958027

210312200231 has 6 divisors (see below), whose sum is σ = 244648886040. Its totient is φ = 180267600156.

The previous prime is 210312200209. The next prime is 210312200257. The reversal of 210312200231 is 132002213012.

It is not a de Polignac number, because 210312200231 - 222 = 210308005927 is a prime.

It is a super-2 number, since 2×2103122002312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210312200201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2146042811 + ... + 2146042908.

It is an arithmetic number, because the mean of its divisors is an integer number (40774814340).

Almost surely, 2210312200231 is an apocalyptic number.

210312200231 is a deficient number, since it is larger than the sum of its proper divisors (34336685809).

210312200231 is an equidigital number, since it uses as much as digits as its factorization.

210312200231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292085733 (or 4292085726 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 210312200231 its reverse (132002213012), we get a palindrome (342314413243).

The spelling of 210312200231 in words is "two hundred ten billion, three hundred twelve million, two hundred thousand, two hundred thirty-one".

Divisors: 1 7 49 4292085719 30044600033 210312200231