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131222103 = 3103424667
BaseRepresentation
bin1111101001001…
…00101001010111
3100010220202212220
413310210221113
5232043101403
621004313423
73152240505
oct764445127
9303822786
10131222103
1168087121
1237b42873
1321255b1c
14135db675
15b7c0953
hex7d24a57

131222103 has 8 divisors (see below), whose sum is σ = 176661888. Its totient is φ = 86631864.

The previous prime is 131222093. The next prime is 131222123. The reversal of 131222103 is 301222131.

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

It is not a de Polignac number, because 131222103 - 214 = 131205719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131222123) 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, 212025 + ... + 212642.

It is an arithmetic number, because the mean of its divisors is an integer number (22082736).

Almost surely, 2131222103 is an apocalyptic number.

131222103 is a deficient number, since it is larger than the sum of its proper divisors (45439785).

131222103 is a wasteful number, since it uses less digits than its factorization.

131222103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424773.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 131222103 is about 11455.2216477901. The cubic root of 131222103 is about 508.1621702572.

Adding to 131222103 its reverse (301222131), we get a palindrome (432444234).

It can be divided in two parts, 13122 and 2103, that added together give a triangular number (15225 = T174).

The spelling of 131222103 in words is "one hundred thirty-one million, two hundred twenty-two thousand, one hundred three".

Divisors: 1 3 103 309 424667 1274001 43740701 131222103