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131322044 = 22714931477
BaseRepresentation
bin1111101001111…
…01000010111100
3100011002211222102
413310331002330
5232104301134
621010404232
73153135050
oct764750274
9304084872
10131322044
1168145217
1237b90678
132128c469
1413625c60
15b7e037e
hex7d3d0bc

131322044 has 24 divisors (see below), whose sum is σ = 264415200. Its totient is φ = 55901376.

The previous prime is 131322017. The next prime is 131322047. The reversal of 131322044 is 440223131.

131322044 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 not an unprimeable number, because it can be changed into a prime (131322047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11567 + ... + 19910.

It is an arithmetic number, because the mean of its divisors is an integer number (11017300).

Almost surely, 2131322044 is an apocalyptic number.

131322044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131322044 is an abundant number, since it is smaller than the sum of its proper divisors (133093156).

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

131322044 is a wasteful number, since it uses less digits than its factorization.

131322044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31637 (or 31635 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 131322044 is about 11459.5830639688. The cubic root of 131322044 is about 508.2911458554.

Adding to 131322044 its reverse (440223131), we get a palindrome (571545175).

The spelling of 131322044 in words is "one hundred thirty-one million, three hundred twenty-two thousand, forty-four".

Divisors: 1 2 4 7 14 28 149 298 596 1043 2086 4172 31477 62954 125908 220339 440678 881356 4690073 9380146 18760292 32830511 65661022 131322044