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131679908 = 2232919977
BaseRepresentation
bin1111101100101…
…00011010100100
3100011210000212122
413312110122210
5232202224113
621022205112
73156155303
oct766243244
9304700778
10131679908
116836a078
1238123798
1321386309
14136ba43a
15b861408
hex7d946a4

131679908 has 6 divisors (see below), whose sum is σ = 230439846. Its totient is φ = 65839952.

The previous prime is 131679901. The next prime is 131679953. The reversal of 131679908 is 809976131.

It can be written as a sum of positive squares in only one way, i.e., 120604324 + 11075584 = 10982^2 + 3328^2 .

It is not an unprimeable number, because it can be changed into a prime (131679901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16459985 + ... + 16459992.

It is an arithmetic number, because the mean of its divisors is an integer number (38406641).

Almost surely, 2131679908 is an apocalyptic number.

It is an amenable number.

131679908 is a deficient number, since it is larger than the sum of its proper divisors (98759938).

131679908 is a wasteful number, since it uses less digits than its factorization.

131679908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32919981 (or 32919979 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 131679908 is about 11475.1866215761. The cubic root of 131679908 is about 508.7524396247.

The spelling of 131679908 in words is "one hundred thirty-one million, six hundred seventy-nine thousand, nine hundred eight".

Divisors: 1 2 4 32919977 65839954 131679908