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131679770 = 2513167977
BaseRepresentation
bin1111101100101…
…00011000011010
3100011210000200112
413312110120122
5232202223040
621022204322
73156155015
oct766243032
9304700615
10131679770
1168369a62
12381236a2
1321386231
14136ba37c
15b861365
hex7d9461a

131679770 has 8 divisors (see below), whose sum is σ = 237023604. Its totient is φ = 52671904.

The previous prime is 131679763. The next prime is 131679787. The reversal of 131679770 is 77976131.

It can be written as a sum of positive squares in 2 ways, for example, as 119268241 + 12411529 = 10921^2 + 3523^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6583979 + ... + 6583998.

Almost surely, 2131679770 is an apocalyptic number.

131679770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131679770 is a deficient number, since it is larger than the sum of its proper divisors (105343834).

131679770 is a wasteful number, since it uses less digits than its factorization.

131679770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13167984.

The product of its (nonzero) digits is 55566, while the sum is 41.

The square root of 131679770 is about 11475.1806086005. The cubic root of 131679770 is about 508.7522619012.

The spelling of 131679770 in words is "one hundred thirty-one million, six hundred seventy-nine thousand, seven hundred seventy".

Divisors: 1 2 5 10 13167977 26335954 65839885 131679770