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131303023 = 271661733
BaseRepresentation
bin1111101001110…
…00011001101111
3100011001212212221
413310320121233
5232103144043
621010140211
73153025435
oct764703157
9304055787
10131303023
11681319a5
1237b81667
13212838c7
141361cd55
15b7d98ed
hex7d3866f

131303023 has 8 divisors (see below), whose sum is σ = 132166976. Its totient is φ = 130442400.

The previous prime is 131302999. The next prime is 131303027. The reversal of 131303023 is 320303131.

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 131303023 - 25 = 131302991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131302988 and 131303006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131303027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178765 + ... + 179497.

It is an arithmetic number, because the mean of its divisors is an integer number (16520872).

Almost surely, 2131303023 is an apocalyptic number.

131303023 is a deficient number, since it is larger than the sum of its proper divisors (863953).

131303023 is an equidigital number, since it uses as much as digits as its factorization.

131303023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 131303023 is about 11458.7531171590. The cubic root of 131303023 is about 508.2666039673.

Adding to 131303023 its reverse (320303131), we get a palindrome (451606154).

The spelling of 131303023 in words is "one hundred thirty-one million, three hundred three thousand, twenty-three".

Divisors: 1 271 661 733 179131 198643 484513 131303023