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5231543143 = 1032572769
BaseRepresentation
bin1001101111101001…
…10000001101100111
3111111121001221001011
410313310300031213
541203233340033
62223042043051
7243433245241
oct46764601547
914447057034
105231543143
112245084882
121020049487
13654b0b378
14378b35091
15209441ccd
hex137d30367

5231543143 has 12 divisors (see below), whose sum is σ = 5309864560. Its totient is φ = 5153882112.

The previous prime is 5231543129. The next prime is 5231543147. The reversal of 5231543143 is 3413451325.

It is not a de Polignac number, because 5231543143 - 229 = 4694672231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5231543147) 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, 6802663 + ... + 6803431.

Almost surely, 25231543143 is an apocalyptic number.

5231543143 is a deficient number, since it is larger than the sum of its proper divisors (78321417).

5231543143 is an equidigital number, since it uses as much as digits as its factorization.

5231543143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386 (or 1129 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

The square root of 5231543143 is about 72329.4071799292. The cubic root of 5231543143 is about 1735.9742158839.

Adding to 5231543143 its reverse (3413451325), we get a palindrome (8644994468).

The spelling of 5231543143 in words is "five billion, two hundred thirty-one million, five hundred forty-three thousand, one hundred forty-three".

Divisors: 1 103 257 769 26471 66049 79207 197633 6803047 20356199 50791681 5231543143