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131552430 = 2356416841
BaseRepresentation
bin1111101011101…
…01010010101110
3100011112120000020
413311311102232
5232134134210
621015343010
73155114532
oct765652256
9304476006
10131552430
1168292319
1238081a66
1321340299
1413685bc2
15b838770
hex7d754ae

131552430 has 32 divisors (see below), whose sum is σ = 316264608. Its totient is φ = 35020800.

The previous prime is 131552419. The next prime is 131552431. The reversal of 131552430 is 34255131.

It is a self number, because there is not a number n which added to its sum of digits gives 131552430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131552431) 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, 15810 + ... + 22650.

It is an arithmetic number, because the mean of its divisors is an integer number (9883269).

Almost surely, 2131552430 is an apocalyptic number.

131552430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131552430 is an abundant number, since it is smaller than the sum of its proper divisors (184712178).

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

131552430 is a wasteful number, since it uses less digits than its factorization.

131552430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7492.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 131552430 is about 11469.6307699943. The cubic root of 131552430 is about 508.5882139045.

The spelling of 131552430 in words is "one hundred thirty-one million, five hundred fifty-two thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 641 1282 1923 3205 3846 6410 6841 9615 13682 19230 20523 34205 41046 68410 102615 205230 4385081 8770162 13155243 21925405 26310486 43850810 65776215 131552430