Search a number
-
+
131101230 = 23513336157
BaseRepresentation
bin1111101000001…
…11001000101110
3100010200122002010
413310013020232
5232030214410
621001542050
73151225221
oct764071056
9303618063
10131101230
1168004327
1237aa4926
1321212ac0
14135a95b8
15b799c20
hex7d0722e

131101230 has 32 divisors (see below), whose sum is σ = 338847264. Its totient is φ = 32270976.

The previous prime is 131101213. The next prime is 131101237. The reversal of 131101230 is 32101131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131101237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167689 + ... + 168468.

It is an arithmetic number, because the mean of its divisors is an integer number (10588977).

Almost surely, 2131101230 is an apocalyptic number.

131101230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131101230 is an abundant number, since it is smaller than the sum of its proper divisors (207746034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131101230 is a wasteful number, since it uses less digits than its factorization.

131101230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336180.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 131101230 is about 11449.9445413504. The cubic root of 131101230 is about 508.0060940224.

Adding to 131101230 its reverse (32101131), we get a palindrome (163202361).

Subtracting from 131101230 its reverse (32101131), we obtain a palindrome (99000099).

The spelling of 131101230 in words is "one hundred thirty-one million, one hundred one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 390 336157 672314 1008471 1680785 2016942 3361570 4370041 5042355 8740082 10084710 13110123 21850205 26220246 43700410 65550615 131101230