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12302001231 = 3131929572479
BaseRepresentation
bin10110111010100000…
…11010010001001111
31011202100101102011020
423131100122101033
5200143303014411
65352414325223
7613566166542
oct133520322117
934670342136
1012302001231
115243182673
122473ab9813
1312108b3490
14849b92859
154c0027606
hex2dd41a44f

12302001231 has 32 divisors (see below), whose sum is σ = 19235328000. Its totient is φ = 6924693888.

The previous prime is 12302001221. The next prime is 12302001241. The reversal of 12302001231 is 13210020321.

12302001231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12302001221) and next prime (12302001241).

It is not a de Polignac number, because 12302001231 - 229 = 11765130319 is a prime.

It is a super-2 number, since 2×123020012312 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12302001231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12302001221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 264751 + ... + 307728.

It is an arithmetic number, because the mean of its divisors is an integer number (601104000).

Almost surely, 212302001231 is an apocalyptic number.

12302001231 is a deficient number, since it is larger than the sum of its proper divisors (6933326769).

12302001231 is a wasteful number, since it uses less digits than its factorization.

12302001231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572543.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12302001231 its reverse (13210020321), we get a palindrome (25512021552).

The spelling of 12302001231 in words is "twelve billion, three hundred two million, one thousand, two hundred thirty-one".

Divisors: 1 3 13 19 29 39 57 87 247 377 551 741 1131 1653 7163 21489 572479 1717437 7442227 10877101 16601891 22326681 32631303 49805673 141402313 215824583 315435929 424206939 647473749 946307787 4100667077 12302001231