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131000474 = 21149911933
BaseRepresentation
bin1111100111011…
…10100010011010
3100010111111212102
413303232202122
5232014003344
620555443402
73150325403
oct763564232
9303444772
10131000474
1167a45660
1237a56562
13211a8c97
14135809aa
15b779e4e
hex7cee89a

131000474 has 16 divisors (see below), whose sum is σ = 214812000. Its totient is φ = 59421360.

The previous prime is 131000437. The next prime is 131000491. The reversal of 131000474 is 474000131.

It is a super-2 number, since 2×1310004742 = 34322248376449352, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5012 + ... + 16944.

It is an arithmetic number, because the mean of its divisors is an integer number (13425750).

Almost surely, 2131000474 is an apocalyptic number.

131000474 is a deficient number, since it is larger than the sum of its proper divisors (83811526).

131000474 is a wasteful number, since it uses less digits than its factorization.

131000474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12445.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 131000474 is about 11445.5438490270. The cubic root of 131000474 is about 507.8759203644.

The spelling of 131000474 in words is "one hundred thirty-one million, four hundred seventy-four", and thus it is an aban number.

Divisors: 1 2 11 22 499 998 5489 10978 11933 23866 131263 262526 5954567 11909134 65500237 131000474