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131235708 = 22310936309
BaseRepresentation
bin1111101001001…
…11111101111100
3100010221110112210
413310213331330
5232044020313
621004500420
73152325252
oct764477574
9303843483
10131235708
116809636a
1237b4a710
132125c086
14136025d2
15b7c49c3
hex7d27f7c

131235708 has 12 divisors (see below), whose sum is σ = 306216680. Its totient is φ = 43745232.

The previous prime is 131235691. The next prime is 131235719. The reversal of 131235708 is 807532131.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1312357082 = 34445622108522528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5468143 + ... + 5468166.

Almost surely, 2131235708 is an apocalyptic number.

It is an amenable number.

131235708 is an abundant number, since it is smaller than the sum of its proper divisors (174980972).

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

131235708 is a wasteful number, since it uses less digits than its factorization.

131235708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10936316 (or 10936314 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 131235708 is about 11455.8154663909. The cubic root of 131235708 is about 508.1797315960.

Adding to 131235708 its reverse (807532131), we get a palindrome (938767839).

The spelling of 131235708 in words is "one hundred thirty-one million, two hundred thirty-five thousand, seven hundred eight".

Divisors: 1 2 3 4 6 12 10936309 21872618 32808927 43745236 65617854 131235708