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131980330 = 2531439901
BaseRepresentation
bin1111101110111…
…01110000101010
3100012100021222101
413313131300222
5232241332310
621032444014
73161546206
oct767356052
9305307871
10131980330
1168554859
123824960a
132145cc91
1413757b06
15b8c043a
hex7dddc2a

131980330 has 32 divisors (see below), whose sum is σ = 250956288. Its totient is φ = 49896000.

The previous prime is 131980249. The next prime is 131980337. The reversal of 131980330 is 33089131.

It is not an unprimeable number, because it can be changed into a prime (131980337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8380 + ... + 18280.

It is an arithmetic number, because the mean of its divisors is an integer number (7842384).

Almost surely, 2131980330 is an apocalyptic number.

131980330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131980330 is a deficient number, since it is larger than the sum of its proper divisors (118975958).

131980330 is a wasteful number, since it uses less digits than its factorization.

131980330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9982.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 131980330 is about 11488.2692343103. The cubic root of 131980330 is about 509.1390446427.

The spelling of 131980330 in words is "one hundred thirty-one million, nine hundred eighty thousand, three hundred thirty".

Divisors: 1 2 5 10 31 43 62 86 155 215 310 430 1333 2666 6665 9901 13330 19802 49505 99010 306931 425743 613862 851486 1534655 2128715 3069310 4257430 13198033 26396066 65990165 131980330