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12231310302 = 2322332916383
BaseRepresentation
bin10110110010000101…
…01111101111011110
31011120102100221102200
423121002233233132
5200022203412202
65341411232330
7612050264541
oct133102575736
934512327380
1012231310302
11520728a512
1224542a86a6
1311cc062323
14840630858
154b8c11e1c
hex2d90afbde

12231310302 has 24 divisors (see below), whose sum is σ = 26614920384. Its totient is φ = 4059603744.

The previous prime is 12231310283. The next prime is 12231310303. The reversal of 12231310302 is 20301313221.

12231310302 is a `hidden beast` number, since 1 + 22 + 31 + 310 + 302 = 666.

It is a super-2 number, since 2×122313103022 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231310303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1453998 + ... + 1462385.

It is an arithmetic number, because the mean of its divisors is an integer number (1108955016).

Almost surely, 212231310302 is an apocalyptic number.

12231310302 is an abundant number, since it is smaller than the sum of its proper divisors (14383610082).

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

12231310302 is a wasteful number, since it uses less digits than its factorization.

12231310302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916624 (or 2916621 counting only the distinct ones).

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

Adding to 12231310302 its reverse (20301313221), we get a palindrome (32532623523).

The spelling of 12231310302 in words is "twelve billion, two hundred thirty-one million, three hundred ten thousand, three hundred two".

Divisors: 1 2 3 6 9 18 233 466 699 1398 2097 4194 2916383 5832766 8749149 17498298 26247447 52494894 679517239 1359034478 2038551717 4077103434 6115655151 12231310302