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31032210230 = 2571575235399
BaseRepresentation
bin11100111001101010…
…011111001100110110
32222002200120121121122
4130321222133030312
51002023221211410
622131143543542
72146002302060
oct347152371466
988080517548
1031032210230
111218496793a
12602075abb2
132c0719c298
14170557c730
15c1956de55
hex739a9f336

31032210230 has 64 divisors (see below), whose sum is σ = 64379059200. Its totient is φ = 10549678464.

The previous prime is 31032210203. The next prime is 31032210263. The reversal of 31032210230 is 3201223013.

It is a junction number, because it is equal to n+sod(n) for n = 31032210199 and 31032210208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5745071 + ... + 5750469.

It is an arithmetic number, because the mean of its divisors is an integer number (1005922800).

Almost surely, 231032210230 is an apocalyptic number.

31032210230 is an abundant number, since it is smaller than the sum of its proper divisors (33346848970).

31032210230 is a wasteful number, since it uses less digits than its factorization.

31032210230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6093.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31032210230 its reverse (3201223013), we get a palindrome (34233433243).

The spelling of 31032210230 in words is "thirty-one billion, thirty-two million, two hundred ten thousand, two hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 157 314 523 785 1046 1099 1570 2198 2615 3661 5230 5399 5495 7322 10798 10990 18305 26995 36610 37793 53990 75586 82111 164222 188965 377930 410555 574777 821110 847643 1149554 1695286 2823677 2873885 4238215 5647354 5747770 5933501 8476430 11867002 14118385 19765739 28236770 29667505 39531478 59335010 98828695 197657390 443317289 886634578 2216586445 3103221023 4433172890 6206442046 15516105115 31032210230