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132213431 = 771266023
BaseRepresentation
bin1111110000101…
…10101010110111
3100012210010201202
413320112222313
5232321312211
621041443115
73163536620
oct770265267
9305703652
10132213431
11686a39a9
123834049b
13215120cc
14137b8a47
15b91953b
hex7e16ab7

132213431 has 8 divisors (see below), whose sum is σ = 153229824. Its totient is φ = 111729240.

The previous prime is 132213427. The next prime is 132213449. The reversal of 132213431 is 134312231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 132213431 - 22 = 132213427 is a prime.

It is a super-2 number, since 2×1322134312 = 34960782673583522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132213421) 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 7 ways as a sum of consecutive naturals, for example, 132515 + ... + 133508.

It is an arithmetic number, because the mean of its divisors is an integer number (19153728).

Almost surely, 2132213431 is an apocalyptic number.

132213431 is a deficient number, since it is larger than the sum of its proper divisors (21016393).

132213431 is an equidigital number, since it uses as much as digits as its factorization.

132213431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266101.

The product of its digits is 432, while the sum is 20.

The square root of 132213431 is about 11498.4099335517. The cubic root of 132213431 is about 509.4386120564.

Adding to 132213431 its reverse (134312231), we get a palindrome (266525662).

The spelling of 132213431 in words is "one hundred thirty-two million, two hundred thirteen thousand, four hundred thirty-one".

Divisors: 1 7 71 497 266023 1862161 18887633 132213431