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230131203211013 = 13149769154496821
BaseRepresentation
bin110100010100110110011000…
…100111100111111100000101
31010011211022212020022111220012
4310110312120213213330011
5220130432201010223023
62133240452032520005
766321300514632146
oct6424663047477405
91104738766274805
10230131203211013
11673661057827a5
1221988b763b0005
139b5438294c820
1440b85a41a3acd
151b9139264d978
hexd14d989e7f05

230131203211013 has 16 divisors (see below), whose sum is σ = 249821361174000. Its totient is φ = 210728718581760.

The previous prime is 230131203211001. The next prime is 230131203211103. The reversal of 230131203211013 is 310112302131032.

It can be written as a sum of positive squares in 8 ways, for example, as 41865856166689 + 188265347044324 = 6470383^2 + 13720982^2 .

It is a cyclic number.

It is not a de Polignac number, because 230131203211013 - 210 = 230131203209989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 230131203211013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230131203211513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75758858 + ... + 78737963.

It is an arithmetic number, because the mean of its divisors is an integer number (15613835073375).

Almost surely, 2230131203211013 is an apocalyptic number.

It is an amenable number.

230131203211013 is a deficient number, since it is larger than the sum of its proper divisors (19690157962987).

230131203211013 is a wasteful number, since it uses less digits than its factorization.

230131203211013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154497752.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 230131203211013 its reverse (310112302131032), we get a palindrome (540243505342045).

The spelling of 230131203211013 in words is "two hundred thirty trillion, one hundred thirty-one billion, two hundred three million, two hundred eleven thousand, thirteen".

Divisors: 1 13 149 769 1937 9997 114581 1489553 154496821 2008458673 23020026329 118808055349 299260342277 1544504719537 17702400247001 230131203211013