Search a number
-
+
131012200430031 = 3479189401481363
BaseRepresentation
bin11101110010011110100111…
…101010101111100111001111
3122011212122101111200202220210
4131302132213222233213033
5114133000441302230111
61142350101330013503
736411214313332404
oct3562364752574717
9564778344622823
10131012200430031
1138820a64730848
121283b060a17293
13581452239049b
14244d04aab82ab
151022ddbe720a6
hex7727a7aaf9cf

131012200430031 has 16 divisors (see below), whose sum is σ = 175048904309760. Its totient is φ = 87158484436800.

The previous prime is 131012200429987. The next prime is 131012200430099. The reversal of 131012200430031 is 130034002210131.

It is not a de Polignac number, because 131012200430031 - 218 = 131012200167887 is a prime.

It is a super-2 number, since 2×1310122004300312 (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131012200450031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271928556 + ... + 272409918.

It is an arithmetic number, because the mean of its divisors is an integer number (10940556519360).

Almost surely, 2131012200430031 is an apocalyptic number.

131012200430031 is a deficient number, since it is larger than the sum of its proper divisors (44036703879729).

131012200430031 is a wasteful number, since it uses less digits than its factorization.

131012200430031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671246.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 131012200430031 its reverse (130034002210131), we get a palindrome (261046202640162).

The spelling of 131012200430031 in words is "one hundred thirty-one trillion, twelve billion, two hundred million, four hundred thirty thousand, thirty-one".

Divisors: 1 3 479 1437 189401 481363 568203 1444089 90723079 230572877 272169237 691718631 91170633563 273511900689 43670733476677 131012200430031