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12001330131 = 371123950849
BaseRepresentation
bin10110010110101010…
…11100001111010011
31010222101121201221120
423023111130033103
5144034320031011
65302514053323
7603255423450
oct131325341723
933871551846
1012001330131
1150a948aa5a
1223ab27a243
13119350c09b
1481bc86827
154a3934a06
hex2cb55c3d3

12001330131 has 16 divisors (see below), whose sum is σ = 18289728000. Its totient is φ = 6857157888.

The previous prime is 12001330091. The next prime is 12001330139. The reversal of 12001330131 is 13103310021.

It is not a de Polignac number, because 12001330131 - 26 = 12001330067 is a prime.

It is a super-2 number, since 2×120013301312 (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 12001330131.

It is not an unprimeable number, because it can be changed into a prime (12001330139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210595 + ... + 261443.

It is an arithmetic number, because the mean of its divisors is an integer number (1143108000).

Almost surely, 212001330131 is an apocalyptic number.

12001330131 is a deficient number, since it is larger than the sum of its proper divisors (6288397869).

12001330131 is a wasteful number, since it uses less digits than its factorization.

12001330131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62098.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 12001330131 its reverse (13103310021), we get a palindrome (25104640152).

It can be divided in two parts, 1200 and 1330131, that added together give a palindrome (1331331).

The spelling of 12001330131 in words is "twelve billion, one million, three hundred thirty thousand, one hundred thirty-one".

Divisors: 1 3 7 21 11239 33717 50849 78673 152547 236019 355943 1067829 571491911 1714475733 4000443377 12001330131