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12132124431 = 371831331547
BaseRepresentation
bin10110100110010000…
…11000011100001111
31011022111201202222220
423103020120130033
5144321310440211
65323505310423
7606434233110
oct132310303417
934274652886
1012132124431
1151662a4719
122427035413
1311b464526b
148313b2207
154b016d806
hex2d321870f

12132124431 has 16 divisors (see below), whose sum is σ = 18488642304. Its totient is φ = 6932044224.

The previous prime is 12132124427. The next prime is 12132124457. The reversal of 12132124431 is 13442123121.

It is not a de Polignac number, because 12132124431 - 22 = 12132124427 is a prime.

It is a super-3 number, since 3×121321244313 (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12132124421) 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, 368800 + ... + 400346.

It is an arithmetic number, because the mean of its divisors is an integer number (1155540144).

Almost surely, 212132124431 is an apocalyptic number.

12132124431 is a deficient number, since it is larger than the sum of its proper divisors (6356517873).

12132124431 is a wasteful number, since it uses less digits than its factorization.

12132124431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49870.

The product of its digits is 1152, while the sum is 24.

Adding to 12132124431 its reverse (13442123121), we get a palindrome (25574247552).

The spelling of 12132124431 in words is "twelve billion, one hundred thirty-two million, one hundred twenty-four thousand, four hundred thirty-one".

Divisors: 1 3 7 21 18313 31547 54939 94641 128191 220829 384573 662487 577720211 1733160633 4044041477 12132124431