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12330131031 = 325472504597
BaseRepresentation
bin10110111101110111…
…01101111001010111
31011211022022112222200
423132323231321113
5200223003143111
65355301255543
7614360245611
oct133673557127
934738275880
1012330131031
115258045a39
1224814045b3
13121668212a
1484d7d5db1
154c2732256
hex2deeede57

12330131031 has 12 divisors (see below), whose sum is σ = 17842756152. Its totient is φ = 8205056496.

The previous prime is 12330131029. The next prime is 12330131083. The reversal of 12330131031 is 13013103321.

It is a happy number.

12330131031 is a `hidden beast` number, since 1 + 23 + 301 + 310 + 31 = 666.

It is not a de Polignac number, because 12330131031 - 21 = 12330131029 is a prime.

It is a super-2 number, since 2×123301310312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12330130995 and 12330131013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12330131531) 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, 1247376 + ... + 1257221.

It is an arithmetic number, because the mean of its divisors is an integer number (1486896346).

Almost surely, 212330131031 is an apocalyptic number.

12330131031 is a deficient number, since it is larger than the sum of its proper divisors (5512625121).

12330131031 is a wasteful number, since it uses less digits than its factorization.

12330131031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505150 (or 2505147 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 12330131031 its reverse (13013103321), we get a palindrome (25343234352).

The spelling of 12330131031 in words is "twelve billion, three hundred thirty million, one hundred thirty-one thousand, thirty-one".

Divisors: 1 3 9 547 1641 4923 2504597 7513791 22541373 1370014559 4110043677 12330131031