Search a number
-
+
131313230 = 2515783639
BaseRepresentation
bin1111101001110…
…10111001001110
3100011002101212222
413310322321032
5232104010410
621010255342
73153100256
oct764727116
9304071788
10131313230
1168139634
1237b87552
1321288449
1413622966
15b7dc955
hex7d3ae4e

131313230 has 16 divisors (see below), whose sum is σ = 237872160. Its totient is φ = 52190112.

The previous prime is 131313229. The next prime is 131313239. The reversal of 131313230 is 32313131.

131313230 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 131313199 and 131313208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131313239) 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 7 ways as a sum of consecutive naturals, for example, 40250 + ... + 43389.

It is an arithmetic number, because the mean of its divisors is an integer number (14867010).

Almost surely, 2131313230 is an apocalyptic number.

131313230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131313230 is a deficient number, since it is larger than the sum of its proper divisors (106558930).

131313230 is a wasteful number, since it uses less digits than its factorization.

131313230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83803.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 131313230 is about 11459.1984885506. The cubic root of 131313230 is about 508.2797738667.

Adding to 131313230 its reverse (32313131), we get a palindrome (163626361).

Subtracting from 131313230 its reverse (32313131), we obtain a palindrome (99000099).

It can be divided in two parts, 13131 and 3230, that added together give a palindrome (16361).

The spelling of 131313230 in words is "one hundred thirty-one million, three hundred thirteen thousand, two hundred thirty".

Divisors: 1 2 5 10 157 314 785 1570 83639 167278 418195 836390 13131323 26262646 65656615 131313230