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131048340 = 223519711087
BaseRepresentation
bin1111100111110…
…10001110010100
3100010120221112020
413303322032110
5232022021330
621000453140
73150615063
oct763721624
9303527466
10131048340
1167a78615
1237a7a1b0
13211c49c7
14135941da
15b789210
hex7cfa394

131048340 has 48 divisors (see below), whose sum is σ = 368831232. Its totient is φ = 34765696.

The previous prime is 131048327. The next prime is 131048353. The reversal of 131048340 is 43840131.

It is an interprime number because it is at equal distance from previous prime (131048327) and next prime (131048353).

It is a self number, because there is not a number n which added to its sum of digits gives 131048340.

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, 6277 + ... + 17363.

It is an arithmetic number, because the mean of its divisors is an integer number (7683984).

Almost surely, 2131048340 is an apocalyptic number.

131048340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131048340 is an abundant number, since it is smaller than the sum of its proper divisors (237782892).

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

131048340 is a wasteful number, since it uses less digits than its factorization.

131048340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11296 (or 11294 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 131048340 is about 11447.6346901882. The cubic root of 131048340 is about 507.9377700860.

Adding to 131048340 its reverse (43840131), we get a palindrome (174888471).

The spelling of 131048340 in words is "one hundred thirty-one million, forty-eight thousand, three hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 197 394 591 788 985 1182 1970 2364 2955 3940 5910 11087 11820 22174 33261 44348 55435 66522 110870 133044 166305 221740 332610 665220 2184139 4368278 6552417 8736556 10920695 13104834 21841390 26209668 32762085 43682780 65524170 131048340