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131227908 = 22371982223
BaseRepresentation
bin1111101001001…
…10000100000100
3100010221001211220
413310212010010
5232043243113
621004400340
73152263440
oct764460404
9303831756
10131227908
1168090519
1237b460b0
1321258666
14135dd820
15b7c2523
hex7d26104

131227908 has 48 divisors (see below), whose sum is σ = 368363520. Its totient is φ = 35519904.

The previous prime is 131227891. The next prime is 131227933. The reversal of 131227908 is 809722131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39516 + ... + 42707.

It is an arithmetic number, because the mean of its divisors is an integer number (7674240).

Almost surely, 2131227908 is an apocalyptic number.

It is an amenable number.

131227908 is an abundant number, since it is smaller than the sum of its proper divisors (237135612).

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

131227908 is a wasteful number, since it uses less digits than its factorization.

131227908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82256 (or 82254 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 131227908 is about 11455.4750228875. The cubic root of 131227908 is about 508.1696635017.

The spelling of 131227908 in words is "one hundred thirty-one million, two hundred twenty-seven thousand, nine hundred eight".

Divisors: 1 2 3 4 6 7 12 14 19 21 28 38 42 57 76 84 114 133 228 266 399 532 798 1596 82223 164446 246669 328892 493338 575561 986676 1151122 1562237 1726683 2302244 3124474 3453366 4686711 6248948 6906732 9373422 10935659 18746844 21871318 32806977 43742636 65613954 131227908