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20130331210 = 251117531012011
BaseRepresentation
bin10010101111110111…
…000111101001001010
31220221220202210001121
4102233313013221022
5312211331044320
613125302505454
71311563664163
oct225767075112
956856683047
1020130331210
1185a0057870
123a9973528a
131b8a6ab0b2
14d8d73076a
157cc4128aa
hex4afdc7a4a

20130331210 has 128 divisors (see below), whose sum is σ = 43087189248. Its totient is φ = 6689280000.

The previous prime is 20130331189. The next prime is 20130331211. The reversal of 20130331210 is 1213303102.

It is not an unprimeable number, because it can be changed into a prime (20130331211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10009105 + ... + 10011115.

It is an arithmetic number, because the mean of its divisors is an integer number (336618666).

Almost surely, 220130331210 is an apocalyptic number.

20130331210 is an abundant number, since it is smaller than the sum of its proper divisors (22956858038).

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

20130331210 is a wasteful number, since it uses less digits than its factorization.

20130331210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2200.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20130331210 its reverse (1213303102), we get a palindrome (21343634312).

The spelling of 20130331210 in words is "twenty billion, one hundred thirty million, three hundred thirty-one thousand, two hundred ten".

Divisors: 1 2 5 10 11 17 22 34 53 55 85 101 106 110 170 187 202 265 374 505 530 583 901 935 1010 1111 1166 1717 1802 1870 2011 2222 2915 3434 4022 4505 5353 5555 5830 8585 9010 9911 10055 10706 11110 17170 18887 19822 20110 22121 26765 34187 37774 44242 49555 53530 58883 68374 91001 94435 99110 106583 110605 117766 170935 182002 188870 203111 213166 221210 294415 341870 376057 406222 455005 532915 588830 752114 910010 1001011 1015555 1065830 1172413 1811911 1880285 2002022 2031110 2234221 2344826 3452887 3623822 3760570 4468442 5005055 5862065 6905774 9059555 10010110 10764883 11171105 11724130 17264435 18119110 19931021 21529766 22342210 34528870 37981757 39862042 53824415 75963514 99655105 107648830 118413713 183003011 189908785 199310210 236827426 366006022 379817570 592068565 915015055 1184137130 1830030110 2013033121 4026066242 10065165605 20130331210