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131168860 = 22519932957
BaseRepresentation
bin1111101000101…
…11101001011100
3100010211001211221
413310113221130
5232034400420
621003223124
73151626334
oct764275134
9303731757
10131168860
1168050119
1237b17aa4
1321237814
14135c60c4
15b7aecaa
hex7d17a5c

131168860 has 24 divisors (see below), whose sum is σ = 276847200. Its totient is φ = 52202304.

The previous prime is 131168857. The next prime is 131168861. The reversal of 131168860 is 68861131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131168861) 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, 12499 + ... + 20458.

It is an arithmetic number, because the mean of its divisors is an integer number (11535300).

Almost surely, 2131168860 is an apocalyptic number.

131168860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131168860 is an abundant number, since it is smaller than the sum of its proper divisors (145678340).

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

131168860 is a wasteful number, since it uses less digits than its factorization.

131168860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33165 (or 33163 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 131168860 is about 11452.8974499905. The cubic root of 131168860 is about 508.0934325015.

The spelling of 131168860 in words is "one hundred thirty-one million, one hundred sixty-eight thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 199 398 796 995 1990 3980 32957 65914 131828 164785 329570 659140 6558443 13116886 26233772 32792215 65584430 131168860