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131212024023320 = 235148721589102181
BaseRepresentation
bin11101110101011000101110…
…000101010000100100011000
3122012120202011120001001220022
4131311120232011100210120
5114144234211122221240
61143021545515050012
736431520163005212
oct3565305605204430
9565522146031808
10131212024023320
1138898785963a79
1212871929440908
13582a318c96196
1424589a55995b2
1510281d4b9c9b5
hex77562e150918

131212024023320 has 64 divisors (see below), whose sum is σ = 295442168169600. Its totient is φ = 52446571107840.

The previous prime is 131212024023319. The next prime is 131212024023349. The reversal of 131212024023320 is 23320420212131.

It is a self number, because there is not a number n which added to its sum of digits gives 131212024023320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1284062630 + ... + 1284164810.

It is an arithmetic number, because the mean of its divisors is an integer number (4616283877650).

Almost surely, 2131212024023320 is an apocalyptic number.

131212024023320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131212024023320 is an abundant number, since it is smaller than the sum of its proper divisors (164230144146280).

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

131212024023320 is a wasteful number, since it uses less digits than its factorization.

131212024023320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125268 (or 125264 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 131212024023320 its reverse (23320420212131), we get a palindrome (154532444235451).

The spelling of 131212024023320 in words is "one hundred thirty-one trillion, two hundred twelve billion, twenty-four million, twenty-three thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 1487 2974 5948 7435 11896 14870 21589 29740 43178 59480 86356 102181 107945 172712 204362 215890 408724 431780 510905 817448 863560 1021810 2043620 4087240 32102843 64205686 128411372 151943147 160514215 256822744 303886294 321028430 607772588 642056860 759715735 1215545176 1284113720 1519431470 2205985609 3038862940 4411971218 6077725880 8823942436 11029928045 17647884872 22059856090 44119712180 88239424360 3280300600583 6560601201166 13121202402332 16401503002915 26242404804664 32803006005830 65606012011660 131212024023320