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132631441 = 791678879
BaseRepresentation
bin1111110011111…
…00101110010001
3100020120101010121
413321330232101
5232423201231
621054430241
73200230405
oct771745621
9306511117
10132631441
1168959a68
1238502381
132162a457
1413887105
15b99d311
hex7e7cb91

132631441 has 4 divisors (see below), whose sum is σ = 134310400. Its totient is φ = 130952484.

The previous prime is 132631417. The next prime is 132631451. The reversal of 132631441 is 144136231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 144136231 = 209968669.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-132631441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (132631451) 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 3 ways as a sum of consecutive naturals, for example, 839361 + ... + 839518.

It is an arithmetic number, because the mean of its divisors is an integer number (33577600).

Almost surely, 2132631441 is an apocalyptic number.

It is an amenable number.

132631441 is a deficient number, since it is larger than the sum of its proper divisors (1678959).

132631441 is an equidigital number, since it uses as much as digits as its factorization.

132631441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678958.

The product of its digits is 1728, while the sum is 25.

The square root of 132631441 is about 11516.5724501694. The cubic root of 132631441 is about 509.9749327677.

Adding to 132631441 its reverse (144136231), we get a palindrome (276767672).

The spelling of 132631441 in words is "one hundred thirty-two million, six hundred thirty-one thousand, four hundred forty-one".

Divisors: 1 79 1678879 132631441