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131224127 = 1922330971
BaseRepresentation
bin1111101001001…
…01001000111111
3100010220212122212
413310211020333
5232043133002
621004331035
73152246426
oct764451077
9303825585
10131224127
11680886a1
1237b43a7b
1321256a18
14135dc2bd
15b7c1352
hex7d2523f

131224127 has 8 divisors (see below), whose sum is σ = 138754560. Its totient is φ = 123756120.

The previous prime is 131224097. The next prime is 131224157. The reversal of 131224127 is 721422131.

It is an interprime number because it is at equal distance from previous prime (131224097) and next prime (131224157).

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

It is not a de Polignac number, because 131224127 - 26 = 131224063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131224157) 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, 11249 + ... + 19722.

It is an arithmetic number, because the mean of its divisors is an integer number (17344320).

Almost surely, 2131224127 is an apocalyptic number.

131224127 is a deficient number, since it is larger than the sum of its proper divisors (7530433).

131224127 is a wasteful number, since it uses less digits than its factorization.

131224127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31213.

The product of its digits is 672, while the sum is 23.

The square root of 131224127 is about 11455.3099914407. The cubic root of 131224127 is about 508.1647829140.

Adding to 131224127 its reverse (721422131), we get a palindrome (852646258).

The spelling of 131224127 in words is "one hundred thirty-one million, two hundred twenty-four thousand, one hundred twenty-seven".

Divisors: 1 19 223 4237 30971 588449 6906533 131224127