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131424044 = 22191172021
BaseRepresentation
bin1111101010101…
…01111100101100
3100011022000220012
413311111330230
5232121032134
621012512352
73154041323
oct765257454
9304260805
10131424044
1168204914
123801b6b8
13212c6a0b
14136510ba
15b8106ce
hex7d55f2c

131424044 has 12 divisors (see below), whose sum is σ = 231197568. Its totient is φ = 65367600.

The previous prime is 131424043. The next prime is 131424061. The reversal of 131424044 is 440424131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (131424043) 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, 85247 + ... + 86774.

It is an arithmetic number, because the mean of its divisors is an integer number (19266464).

Almost surely, 2131424044 is an apocalyptic number.

It is an amenable number.

131424044 is a deficient number, since it is larger than the sum of its proper divisors (99773524).

131424044 is a wasteful number, since it uses less digits than its factorization.

131424044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172216 (or 172214 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 131424044 is about 11464.0326238196. The cubic root of 131424044 is about 508.4227111736.

Adding to 131424044 its reverse (440424131), we get a palindrome (571848175).

The spelling of 131424044 in words is "one hundred thirty-one million, four hundred twenty-four thousand, forty-four".

Divisors: 1 2 4 191 382 764 172021 344042 688084 32856011 65712022 131424044