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131608814 = 21393891217
BaseRepresentation
bin1111101100000…
…11000011101110
3100011122102100112
413312003003232
5232142440224
621020500022
73155441111
oct766030356
9304572315
10131608814
1168320717
12380aa612
132135cb4c
141369c578
15b84a30e
hex7d830ee

131608814 has 16 divisors (see below), whose sum is σ = 199508400. Its totient is φ = 65109504.

The previous prime is 131608787. The next prime is 131608817. The reversal of 131608814 is 418806131.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131608817) 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, 107534 + ... + 108750.

It is an arithmetic number, because the mean of its divisors is an integer number (12469275).

Almost surely, 2131608814 is an apocalyptic number.

131608814 is a deficient number, since it is larger than the sum of its proper divisors (67899586).

131608814 is a wasteful number, since it uses less digits than its factorization.

131608814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 131608814 is about 11472.0884759489. The cubic root of 131608814 is about 508.6608646388.

The spelling of 131608814 in words is "one hundred thirty-one million, six hundred eight thousand, eight hundred fourteen".

Divisors: 1 2 139 278 389 778 1217 2434 54071 108142 169163 338326 473413 946826 65804407 131608814