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131232248 = 23717137849
BaseRepresentation
bin1111101001001…
…11000111111000
3100010221021210122
413310213013320
5232043412443
621004432412
73152312210
oct764470770
9303837718
10131232248
1168093804
1237b48708
132125a624
1413601240
15b7c3968
hex7d271f8

131232248 has 32 divisors (see below), whose sum is σ = 297756000. Its totient is φ = 52933632.

The previous prime is 131232209. The next prime is 131232251. The reversal of 131232248 is 842232131.

131232248 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67973 + ... + 69876.

It is an arithmetic number, because the mean of its divisors is an integer number (9304875).

Almost surely, 2131232248 is an apocalyptic number.

It is an amenable number.

131232248 is an abundant number, since it is smaller than the sum of its proper divisors (166523752).

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

131232248 is a wasteful number, since it uses less digits than its factorization.

131232248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137879 (or 137875 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 131232248 is about 11455.6644503931. The cubic root of 131232248 is about 508.1752655418.

Adding to 131232248 its reverse (842232131), we get a palindrome (973464379).

The spelling of 131232248 in words is "one hundred thirty-one million, two hundred thirty-two thousand, two hundred forty-eight".

Divisors: 1 2 4 7 8 14 17 28 34 56 68 119 136 238 476 952 137849 275698 551396 964943 1102792 1929886 2343433 3859772 4686866 7719544 9373732 16404031 18747464 32808062 65616124 131232248