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14131431 = 322276917
BaseRepresentation
bin110101111010…
…000011100111
3222120221200100
4311322003213
512104201211
61222515143
7231054336
oct65720347
928527610
1014131431
117a82176
124895ab3
132c0a1c2
141c3bd1d
151392156
hexd7a0e7

14131431 has 12 divisors (see below), whose sum is σ = 20504952. Its totient is φ = 9378096.

The previous prime is 14131427. The next prime is 14131433. The reversal of 14131431 is 13413141.

It is not a de Polignac number, because 14131431 - 22 = 14131427 is a prime.

It is a super-2 number, since 2×141314312 = 399394684215522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14131433) 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, 1416 + ... + 5501.

It is an arithmetic number, because the mean of its divisors is an integer number (1708746).

Almost surely, 214131431 is an apocalyptic number.

14131431 is a deficient number, since it is larger than the sum of its proper divisors (6373521).

14131431 is a wasteful number, since it uses less digits than its factorization.

14131431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7150 (or 7147 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 14131431 is about 3759.1795647455. The cubic root of 14131431 is about 241.7660866139.

Adding to 14131431 its reverse (13413141), we get a palindrome (27544572).

The spelling of 14131431 in words is "fourteen million, one hundred thirty-one thousand, four hundred thirty-one".

Divisors: 1 3 9 227 681 2043 6917 20751 62253 1570159 4710477 14131431