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130503423 = 388749043
BaseRepresentation
bin1111100011101…
…01001011111111
3100002120021001010
413301311023333
5231402102143
620541050303
73143155311
oct761651377
9302507033
10130503423
1167736176
1237856993
132106397b
14134917b1
15b6cca33
hex7c752ff

130503423 has 8 divisors (see below), whose sum is σ = 174204288. Its totient is φ = 86902424.

The previous prime is 130503421. The next prime is 130503427. The reversal of 130503423 is 324305031.

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 130503423 - 21 = 130503421 is a prime.

It is a super-2 number, since 2×1305034232 = 34062286829433858, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 130503423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130503421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21861 + ... + 27182.

It is an arithmetic number, because the mean of its divisors is an integer number (21775536).

Almost surely, 2130503423 is an apocalyptic number.

130503423 is a deficient number, since it is larger than the sum of its proper divisors (43700865).

130503423 is an equidigital number, since it uses as much as digits as its factorization.

130503423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49933.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 130503423 is about 11423.8094784533. The cubic root of 130503423 is about 507.2327670067.

Adding to 130503423 its reverse (324305031), we get a palindrome (454808454).

The spelling of 130503423 in words is "one hundred thirty million, five hundred three thousand, four hundred twenty-three".

Divisors: 1 3 887 2661 49043 147129 43501141 130503423