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14231431 = 172928867
BaseRepresentation
bin110110010010…
…011110000111
3222210000212001
4312102132013
512120401211
61225010131
7231652024
oct66223607
928700761
1014231431
118040315
124923947
132c43886
141c6654b
1513b1ac1
hexd92787

14231431 has 8 divisors (see below), whose sum is σ = 15588720. Its totient is φ = 12931968.

The previous prime is 14231419. The next prime is 14231467. The reversal of 14231431 is 13413241.

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

It is not a de Polignac number, because 14231431 - 29 = 14230919 is a prime.

It is a super-2 number, since 2×142314312 = 405067256615522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14231399 and 14231408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14231491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13941 + ... + 14926.

It is an arithmetic number, because the mean of its divisors is an integer number (1948590).

Almost surely, 214231431 is an apocalyptic number.

14231431 is a deficient number, since it is larger than the sum of its proper divisors (1357289).

14231431 is a wasteful number, since it uses less digits than its factorization.

14231431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28913.

The product of its digits is 288, while the sum is 19.

The square root of 14231431 is about 3772.4568917351. The cubic root of 14231431 is about 242.3350264904.

Adding to 14231431 its reverse (13413241), we get a palindrome (27644672).

The spelling of 14231431 in words is "fourteen million, two hundred thirty-one thousand, four hundred thirty-one".

Divisors: 1 17 29 493 28867 490739 837143 14231431