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12253431 = 38945893
BaseRepresentation
bin101110101111…
…100011110111
3212001112112210
4232233203313
511114102211
61114344503
7206103201
oct56574367
925045483
1012253431
116a0a203
12412b133
132700468
1418ad771
1511209a6
hexbaf8f7

12253431 has 8 divisors (see below), whose sum is σ = 16521840. Its totient is φ = 8076992.

The previous prime is 12253427. The next prime is 12253469. The reversal of 12253431 is 13435221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12253431 - 22 = 12253427 is a prime.

It is a super-2 number, since 2×122534312 = 300293142543522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12253398 and 12253407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12253471) 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 7 ways as a sum of consecutive naturals, for example, 22680 + ... + 23213.

It is an arithmetic number, because the mean of its divisors is an integer number (2065230).

Almost surely, 212253431 is an apocalyptic number.

12253431 is a deficient number, since it is larger than the sum of its proper divisors (4268409).

12253431 is an equidigital number, since it uses as much as digits as its factorization.

12253431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45985.

The product of its digits is 720, while the sum is 21.

The square root of 12253431 is about 3500.4901085419. The cubic root of 12253431 is about 230.5433342360.

Adding to 12253431 its reverse (13435221), we get a palindrome (25688652).

It can be divided in two parts, 1225 and 3431, that added together give a triangular number (4656 = T96).

The spelling of 12253431 in words is "twelve million, two hundred fifty-three thousand, four hundred thirty-one".

Divisors: 1 3 89 267 45893 137679 4084477 12253431