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132444331 = 177790843
BaseRepresentation
bin1111110010011…
…11000010101011
3100020012212110121
413321033002223
5232401204311
621050424111
73165521035
oct771170253
9306185417
10132444331
1168841428
1238432037
1321593236
1413838c55
15b962b71
hex7e4f0ab

132444331 has 4 divisors (see below), whose sum is σ = 140235192. Its totient is φ = 124653472.

The previous prime is 132444329. The next prime is 132444413. The reversal of 132444331 is 133444231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133444231 = 1091224259.

It is a cyclic number.

It is not a de Polignac number, because 132444331 - 21 = 132444329 is a prime.

It is a super-2 number, since 2×1324443312 = 35083001628075122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 132444296 and 132444305.

It is not an unprimeable number, because it can be changed into a prime (132444311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3895405 + ... + 3895438.

It is an arithmetic number, because the mean of its divisors is an integer number (35058798).

Almost surely, 2132444331 is an apocalyptic number.

132444331 is a deficient number, since it is larger than the sum of its proper divisors (7790861).

132444331 is an equidigital number, since it uses as much as digits as its factorization.

132444331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7790860.

The product of its digits is 3456, while the sum is 25.

The square root of 132444331 is about 11508.4460723418. The cubic root of 132444331 is about 509.7350039441.

Adding to 132444331 its reverse (133444231), we get a palindrome (265888562).

The spelling of 132444331 in words is "one hundred thirty-two million, four hundred forty-four thousand, three hundred thirty-one".

Divisors: 1 17 7790843 132444331