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131340326 = 21389211269
BaseRepresentation
bin1111101010000…
…01100000100110
3100011010210001112
413311001200212
5232110342301
621011025022
73153242255
oct765014046
9304123045
10131340326
1168157a27
1237b9b172
1321297890
141362c79c
15b7e59bb
hex7d41826

131340326 has 32 divisors (see below), whose sum is σ = 216367200. Its totient is φ = 59431680.

The previous prime is 131340311. The next prime is 131340329. The reversal of 131340326 is 623043131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131340329) 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, 488120 + ... + 488388.

It is an arithmetic number, because the mean of its divisors is an integer number (6761475).

Almost surely, 2131340326 is an apocalyptic number.

131340326 is a deficient number, since it is larger than the sum of its proper divisors (85026874).

131340326 is a wasteful number, since it uses less digits than its factorization.

131340326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 131340326 is about 11460.3807092086. The cubic root of 131340326 is about 508.3147320137.

Adding to 131340326 its reverse (623043131), we get a palindrome (754383457).

The spelling of 131340326 in words is "one hundred thirty-one million, three hundred forty thousand, three hundred twenty-six".

Divisors: 1 2 13 26 89 178 211 269 422 538 1157 2314 2743 3497 5486 6994 18779 23941 37558 47882 56759 113518 244127 311233 488254 622466 737867 1475734 5051551 10103102 65670163 131340326