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131131196 = 2279748281
BaseRepresentation
bin1111101000011…
…10011100111100
3100010202011011222
413310032130330
5232032144241
621002332512
73151411460
oct764163474
9303664158
10131131196
1168024899
1237aba138
1321223631
14135b64a0
15b7a3a4b
hex7d0e73c

131131196 has 24 divisors (see below), whose sum is σ = 264971616. Its totient is φ = 55618560.

The previous prime is 131131193. The next prime is 131131199. The reversal of 131131196 is 691131131.

It is an interprime number because it is at equal distance from previous prime (131131193) and next prime (131131199).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131131193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21425 + ... + 26856.

It is an arithmetic number, because the mean of its divisors is an integer number (11040484).

Almost surely, 2131131196 is an apocalyptic number.

It is an amenable number.

131131196 is an abundant number, since it is smaller than the sum of its proper divisors (133840420).

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

131131196 is a wasteful number, since it uses less digits than its factorization.

131131196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48389 (or 48387 counting only the distinct ones).

The product of its digits is 486, while the sum is 26.

The square root of 131131196 is about 11451.2530318738. The cubic root of 131131196 is about 508.0447963059.

The spelling of 131131196 in words is "one hundred thirty-one million, one hundred thirty-one thousand, one hundred ninety-six".

Divisors: 1 2 4 7 14 28 97 194 388 679 1358 2716 48281 96562 193124 337967 675934 1351868 4683257 9366514 18733028 32782799 65565598 131131196