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131113230 = 23537311717
BaseRepresentation
bin1111101000010…
…10000100001110
3100010201020112120
413310022010032
5232031110410
621002113410
73151305213
oct764120416
9303636476
10131113230
1168012346
1237aab866
13212183c1
14135adb0a
15b79d570
hex7d0a10e

131113230 has 32 divisors (see below), whose sum is σ = 315542304. Its totient is φ = 34866816.

The previous prime is 131113223. The next prime is 131113259. The reversal of 131113230 is 32311131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5332 + ... + 17048.

It is an arithmetic number, because the mean of its divisors is an integer number (9860697).

Almost surely, 2131113230 is an apocalyptic number.

131113230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131113230 is an abundant number, since it is smaller than the sum of its proper divisors (184429074).

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

131113230 is a wasteful number, since it uses less digits than its factorization.

131113230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12100.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 131113230 is about 11450.4685493651. The cubic root of 131113230 is about 508.0215932087.

Adding to 131113230 its reverse (32311131), we get a palindrome (163424361).

It can be divided in two parts, 1311 and 13230, that added together give a palindrome (14541).

The spelling of 131113230 in words is "one hundred thirty-one million, one hundred thirteen thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 373 746 1119 1865 2238 3730 5595 11190 11717 23434 35151 58585 70302 117170 175755 351510 4370441 8740882 13111323 21852205 26222646 43704410 65556615 131113230