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131124223 = 223617953
BaseRepresentation
bin1111101000011…
…00101111111111
3100010201210121201
413310030233333
5232031433343
621002240331
73151352236
oct764145777
9303653551
10131124223
116801a62a
1237ab60a7
13212203c9
14135b3b1d
15b7a194d
hex7d0cbff

131124223 has 8 divisors (see below), whose sum is σ = 132064128. Its totient is φ = 130187904.

The previous prime is 131124211. The next prime is 131124229. The reversal of 131124223 is 322421131.

It is a happy number.

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 131124223 - 29 = 131123711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131124223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131124229) 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, 137115 + ... + 138067.

It is an arithmetic number, because the mean of its divisors is an integer number (16508016).

Almost surely, 2131124223 is an apocalyptic number.

131124223 is a deficient number, since it is larger than the sum of its proper divisors (939905).

131124223 is an equidigital number, since it uses as much as digits as its factorization.

131124223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793.

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

The square root of 131124223 is about 11450.9485633287. The cubic root of 131124223 is about 508.0357909249.

Adding to 131124223 its reverse (322421131), we get a palindrome (453545354).

The spelling of 131124223 in words is "one hundred thirty-one million, one hundred twenty-four thousand, two hundred twenty-three".

Divisors: 1 223 617 953 137591 212519 588001 131124223