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131430661230 = 235111512637581
BaseRepresentation
bin111101001100111100…
…0001011110001101110
3110120020121222100212210
41322121320023301232
54123132222124410
6140213423111250
712331655121231
oct1723170136156
9416217870783
10131430661230
1150815200090
122157ba42526
13c5173ca23b
14650b4bd418
153643763220
hex1e99e0bc6e

131430661230 has 64 divisors (see below), whose sum is σ = 346388368896. Its totient is φ = 31650960000.

The previous prime is 131430661217. The next prime is 131430661283. The reversal of 131430661230 is 32166034131.

It is a super-2 number, since 2×1314306612302 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 1268961 + ... + 1368620.

It is an arithmetic number, because the mean of its divisors is an integer number (5412318264).

Almost surely, 2131430661230 is an apocalyptic number.

131430661230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131430661230 is an abundant number, since it is smaller than the sum of its proper divisors (214957707666).

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

131430661230 is a wasteful number, since it uses less digits than its factorization.

131430661230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637753.

The product of its (nonzero) digits is 7776, while the sum is 30.

Adding to 131430661230 its reverse (32166034131), we get a palindrome (163596695361).

The spelling of 131430661230 in words is "one hundred thirty-one billion, four hundred thirty million, six hundred sixty-one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 151 165 302 330 453 755 906 1510 1661 2265 3322 4530 4983 8305 9966 16610 24915 49830 2637581 5275162 7912743 13187905 15825486 26375810 29013391 39563715 58026782 79127430 87040173 145066955 174080346 290133910 398274731 435200865 796549462 870401730 1194824193 1991373655 2389648386 3982747310 4381022041 5974120965 8762044082 11948241930 13143066123 21905110205 26286132246 43810220410 65715330615 131430661230