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20331202130 = 25192331223673
BaseRepresentation
bin10010111011110101…
…011000011001010010
31221110220202002011022
4102323311120121102
5313114241432010
613201240115442
71316553236531
oct227365303122
957426662138
1020331202130
118693485098
123b34a65b82
131bc01ab925
14dac29c318
157ded8ed55
hex4bbd58652

20331202130 has 128 divisors (see below), whose sum is σ = 41741844480. Its totient is φ = 7089223680.

The previous prime is 20331202127. The next prime is 20331202183. The reversal of 20331202130 is 3120213302.

It is a junction number, because it is equal to n+sod(n) for n = 20331202099 and 20331202108.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30209474 + ... + 30210146.

It is an arithmetic number, because the mean of its divisors is an integer number (326108160).

Almost surely, 220331202130 is an apocalyptic number.

20331202130 is an abundant number, since it is smaller than the sum of its proper divisors (21410642350).

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

20331202130 is a wasteful number, since it uses less digits than its factorization.

20331202130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976.

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

Adding to 20331202130 its reverse (3120213302), we get a palindrome (23451415432).

The spelling of 20331202130 in words is "twenty billion, three hundred thirty-one million, two hundred two thousand, one hundred thirty".

Divisors: 1 2 5 10 19 23 31 38 46 62 95 115 155 190 223 230 310 437 446 589 673 713 874 1115 1178 1346 1426 2185 2230 2945 3365 3565 4237 4370 5129 5890 6730 6913 7130 8474 10258 12787 13547 13826 15479 20863 21185 25574 25645 27094 30958 34565 41726 42370 51290 63935 67735 69130 77395 97451 104315 127870 131347 135470 150079 154790 158999 194902 208630 262694 294101 300158 317998 396397 479849 487255 588202 656735 750395 792794 794995 959698 974510 1313470 1470505 1500790 1589990 1981985 2399245 2851501 2941010 3020981 3451817 3963970 4652449 4798490 5703002 6041962 6903634 9117131 9304898 14257505 15104905 17259085 18234262 23262245 28515010 30209810 34518170 45585655 46524490 65584523 88396531 91171310 107006327 131169046 176793062 214012654 327922615 441982655 535031635 655845230 883965310 1070063270 2033120213 4066240426 10165601065 20331202130