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131161130 = 25591311697
BaseRepresentation
bin1111101000101…
…01110000101010
3100010210200020122
413310111300222
5232034124010
621003123242
73151564652
oct764256052
9303720218
10131161130
1168045331
1237b13522
1321234149
14135c3362
15b7ac855
hex7d15c2a

131161130 has 32 divisors (see below), whose sum is σ = 242066880. Its totient is φ = 51151360.

The previous prime is 131161109. The next prime is 131161133. The reversal of 131161130 is 31161131.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131161099 and 131161108.

It is not an unprimeable number, because it can be changed into a prime (131161133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76442 + ... + 78138.

It is an arithmetic number, because the mean of its divisors is an integer number (7564590).

Almost surely, 2131161130 is an apocalyptic number.

131161130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131161130 is a deficient number, since it is larger than the sum of its proper divisors (110905750).

131161130 is a wasteful number, since it uses less digits than its factorization.

131161130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 131161130 is about 11452.5599758307. The cubic root of 131161130 is about 508.0834513739.

Subtracting from 131161130 its reverse (31161131), we obtain a palindrome (99999999).

The spelling of 131161130 in words is "one hundred thirty-one million, one hundred sixty-one thousand, one hundred thirty".

Divisors: 1 2 5 10 59 118 131 262 295 590 655 1310 1697 3394 7729 8485 15458 16970 38645 77290 100123 200246 222307 444614 500615 1001230 1111535 2223070 13116113 26232226 65580565 131161130