Search a number
-
+
12230302131 = 33797568349
BaseRepresentation
bin10110110001111101…
…11001100110110011
31011120100110201111000
423120332321212303
5200021424132011
65341333453043
7612035565345
oct133076714663
934510421430
1012230302131
115206761013
122453aa1183
1311cba9b488
1484044b295
154b8ab3356
hex2d8fb99b3

12230302131 has 16 divisors (see below), whose sum is σ = 18141732000. Its totient is φ = 8143290144.

The previous prime is 12230302121. The next prime is 12230302151. The reversal of 12230302131 is 13120303221.

12230302131 is a `hidden beast` number, since 1 + 2 + 230 + 302 + 131 = 666.

It is not a de Polignac number, because 12230302131 - 26 = 12230302067 is a prime.

It is a super-4 number, since 4×122303021314 (a number of 41 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (12230302121) 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, 262656 + ... + 305693.

It is an arithmetic number, because the mean of its divisors is an integer number (1133858250).

Almost surely, 212230302131 is an apocalyptic number.

12230302131 is a deficient number, since it is larger than the sum of its proper divisors (5911429869).

12230302131 is an equidigital number, since it uses as much as digits as its factorization.

12230302131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569155 (or 569149 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12230302131 its reverse (13120303221), we get a palindrome (25350605352).

The spelling of 12230302131 in words is "twelve billion, two hundred thirty million, three hundred two thousand, one hundred thirty-one".

Divisors: 1 3 9 27 797 2391 7173 21519 568349 1705047 5115141 15345423 452974153 1358922459 4076767377 12230302131