Search a number
-
+
131321230 = 2513132123
BaseRepresentation
bin1111101001111…
…00110110001110
3100011002210212021
413310330312032
5232104234410
621010400354
73153132505
oct764746616
9304083767
10131321230
1168144647
1237b900ba
132128bc91
141362583c
15b7deeda
hex7d3cd8e

131321230 has 8 divisors (see below), whose sum is σ = 236378232. Its totient is φ = 52528488.

The previous prime is 131321221. The next prime is 131321231. The reversal of 131321230 is 32123131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131321231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6566052 + ... + 6566071.

It is an arithmetic number, because the mean of its divisors is an integer number (29547279).

Almost surely, 2131321230 is an apocalyptic number.

131321230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131321230 is a deficient number, since it is larger than the sum of its proper divisors (105057002).

131321230 is a wasteful number, since it uses less digits than its factorization.

131321230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13132130.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 131321230 is about 11459.5475477874. The cubic root of 131321230 is about 508.2900956386.

Adding to 131321230 its reverse (32123131), we get a palindrome (163444361).

The spelling of 131321230 in words is "one hundred thirty-one million, three hundred twenty-one thousand, two hundred thirty".

Divisors: 1 2 5 10 13132123 26264246 65660615 131321230