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212320302031131 = 37175510391079297
BaseRepresentation
bin110000010001101010101100…
…001011100110000100011011
31000211202121210220111020011220
4300101222230023212010123
5210312123434304444011
62031322333351423123
762502431004555630
oct6021525413460433
91024677726436156
10212320302031131
1161719597354978
121b99111b684aa3
139161945914428
143a60500bac187
151982e11b9a506
hexc11aac2e611b

212320302031131 has 32 divisors (see below), whose sum is σ = 342568149073920. Its totient is φ = 114188756975616.

The previous prime is 212320302031121. The next prime is 212320302031133. The reversal of 212320302031131 is 131130203023212.

It is not a de Polignac number, because 212320302031131 - 26 = 212320302031067 is a prime.

It is a super-2 number, since 2×2123203020311312 (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212320302031133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196181275 + ... + 197260571.

It is an arithmetic number, because the mean of its divisors is an integer number (10705254658560).

Almost surely, 2212320302031131 is an apocalyptic number.

212320302031131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

212320302031131 is a deficient number, since it is larger than the sum of its proper divisors (130247847042789).

212320302031131 is a wasteful number, since it uses less digits than its factorization.

212320302031131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630363.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 212320302031131 its reverse (131130203023212), we get a palindrome (343450505054343).

The spelling of 212320302031131 in words is "two hundred twelve trillion, three hundred twenty billion, three hundred two million, thirty-one thousand, one hundred thirty-one".

Divisors: 1 3 7 17 21 51 119 357 551039 1079297 1653117 3237891 3857273 7555079 9367663 11571819 18348049 22665237 28102989 55044147 65573641 128436343 196720923 385309029 594734739583 1784204218749 4163143177081 10110490572911 12489429531243 30331471718733 70773434010377 212320302031131