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12431112453 = 3217577140813
BaseRepresentation
bin10111001001111001…
…11011100100000101
31012002100022221110100
423210330323210011
5200424331044303
65413305514313
7620024466234
oct134474734405
935070287410
1012431112453
1152aa047861
1224ab1a2999
13123157a556
1485cda0b1b
154cb52c8a3
hex2e4f3b905

12431112453 has 24 divisors (see below), whose sum is σ = 19045375128. Its totient is φ = 7786340352.

The previous prime is 12431112413. The next prime is 12431112467. The reversal of 12431112453 is 35421113421.

It can be written as a sum of positive squares in 4 ways, for example, as 6829039044 + 5602073409 = 82638^2 + 74847^2 .

It is not a de Polignac number, because 12431112453 - 222 = 12426918149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12431112413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17875 + ... + 158687.

It is an arithmetic number, because the mean of its divisors is an integer number (793557297).

Almost surely, 212431112453 is an apocalyptic number.

It is an amenable number.

12431112453 is a deficient number, since it is larger than the sum of its proper divisors (6614262675).

12431112453 is a wasteful number, since it uses less digits than its factorization.

12431112453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141413 (or 141410 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

Adding to 12431112453 its reverse (35421113421), we get a palindrome (47852225874).

The spelling of 12431112453 in words is "twelve billion, four hundred thirty-one million, one hundred twelve thousand, four hundred fifty-three".

Divisors: 1 3 9 17 51 153 577 1731 5193 9809 29427 88281 140813 422439 1267317 2393821 7181463 21544389 81249101 243747303 731241909 1381234717 4143704151 12431112453