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131303238 = 23114148523
BaseRepresentation
bin1111101001110…
…00011101000110
3100011001220011220
413310320131012
5232103200423
621010141210
73153026163
oct764703506
9304056156
10131303238
1168132080
1237b81806
1321283a31
141361d06a
15b7d99e3
hex7d38746

131303238 has 32 divisors (see below), whose sum is σ = 293473152. Its totient is φ = 38817600.

The previous prime is 131303203. The next prime is 131303239. The reversal of 131303238 is 832303131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131303239) 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, 21556 + ... + 26967.

It is an arithmetic number, because the mean of its divisors is an integer number (9171036).

Almost surely, 2131303238 is an apocalyptic number.

131303238 is an abundant number, since it is smaller than the sum of its proper divisors (162169914).

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

131303238 is a wasteful number, since it uses less digits than its factorization.

131303238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48580.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 131303238 is about 11458.7624986296. The cubic root of 131303238 is about 508.2668813848.

Adding to 131303238 its reverse (832303131), we get a palindrome (963606369).

The spelling of 131303238 in words is "one hundred thirty-one million, three hundred three thousand, two hundred thirty-eight".

Divisors: 1 2 3 6 11 22 33 41 66 82 123 246 451 902 1353 2706 48523 97046 145569 291138 533753 1067506 1601259 1989443 3202518 3978886 5968329 11936658 21883873 43767746 65651619 131303238