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213132232005 = 357112194320533
BaseRepresentation
bin1100011001111110101…
…0111100010101000101
3202101010112220012011120
43012133222330111011
511442443322411010
6241524523224153
721253421036460
oct3063752742505
9671115805146
10213132232005
1182430652500
1235381678059
1317137c0b564
14a45c22c2d7
1558262e5e70
hex319fabc545

213132232005 has 192 divisors, whose sum is σ = 461433477120. Its totient is φ = 81957173760.

The previous prime is 213132232003. The next prime is 213132232031. The reversal of 213132232005 is 500232231312.

It is a happy number.

It is not a de Polignac number, because 213132232005 - 21 = 213132232003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213132232003) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 10369719 + ... + 10390251.

It is an arithmetic number, because the mean of its divisors is an integer number (2403299360).

Almost surely, 2213132232005 is an apocalyptic number.

It is an amenable number.

213132232005 is an abundant number, since it is smaller than the sum of its proper divisors (248301245115).

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

213132232005 is a wasteful number, since it uses less digits than its factorization.

213132232005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20632 (or 20621 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 213132232005 its reverse (500232231312), we get a palindrome (713364463317).

The spelling of 213132232005 in words is "two hundred thirteen billion, one hundred thirty-two million, two hundred thirty-two thousand, five".