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131003023 = 677127539
BaseRepresentation
bin1111100111011…
…11001010001111
3100010111122100211
413303233022033
5232014044043
620555503251
73150336004
oct763571217
9303448324
10131003023
1167a47568
1237a57b27
13211aa1a8
14135818ab
15b77aa9d
hex7cef28f

131003023 has 8 divisors (see below), whose sum is σ = 134835840. Its totient is φ = 127225560.

The previous prime is 131003017. The next prime is 131003027. The reversal of 131003023 is 320300131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-131003023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131002994 and 131003012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131003027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9013 + ... + 18526.

It is an arithmetic number, because the mean of its divisors is an integer number (16854480).

Almost surely, 2131003023 is an apocalyptic number.

131003023 is a deficient number, since it is larger than the sum of its proper divisors (3832817).

131003023 is an equidigital number, since it uses as much as digits as its factorization.

131003023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27677.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 131003023 is about 11445.6552018659. The cubic root of 131003023 is about 507.8792144169.

Adding to 131003023 its reverse (320300131), we get a palindrome (451303154).

The spelling of 131003023 in words is "one hundred thirty-one million, three thousand, twenty-three".

Divisors: 1 67 71 4757 27539 1845113 1955269 131003023