Search a number
-
+
131226255 = 32519314951
BaseRepresentation
bin1111101001001…
…01101010001111
3100010220222120200
413310211222033
5232043220010
621004344543
73152255556
oct764455217
9303828520
10131226255
116808a256
1237b45153
1321257994
14135dcd9d
15b7c1cc0
hex7d25a8f

131226255 has 48 divisors (see below), whose sum is σ = 247203840. Its totient is φ = 64152000.

The previous prime is 131226253. The next prime is 131226283. The reversal of 131226255 is 552622131.

It is a happy number.

131226255 is a `hidden beast` number, since 1 + 31 + 2 + 2 + 625 + 5 = 666.

It is not a de Polignac number, because 131226255 - 21 = 131226253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131226253) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24030 + ... + 28980.

It is an arithmetic number, because the mean of its divisors is an integer number (5150080).

Almost surely, 2131226255 is an apocalyptic number.

131226255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131226255 is a deficient number, since it is larger than the sum of its proper divisors (115977585).

131226255 is a wasteful number, since it uses less digits than its factorization.

131226255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5012 (or 5009 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 131226255 is about 11455.4028737535. The cubic root of 131226255 is about 508.1675297889.

Adding to 131226255 its reverse (552622131), we get a palindrome (683848386).

The spelling of 131226255 in words is "one hundred thirty-one million, two hundred twenty-six thousand, two hundred fifty-five".

Divisors: 1 3 5 9 15 19 31 45 57 93 95 155 171 279 285 465 589 855 1395 1767 2945 4951 5301 8835 14853 24755 26505 44559 74265 94069 153481 222795 282207 460443 470345 767405 846621 1381329 1411035 2302215 2916139 4233105 6906645 8748417 14580695 26245251 43742085 131226255