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131444411 = 722682539
BaseRepresentation
bin1111101010110…
…10111010111011
3100011100001211112
413311122322323
5232122210121
621013150535
73154154600
oct765327273
9304301745
10131444411
116821914a
123802b44b
1321303077
14136586a7
15b81675b
hex7d5aebb

131444411 has 6 divisors (see below), whose sum is σ = 152904780. Its totient is φ = 112666596.

The previous prime is 131444407. The next prime is 131444441. The reversal of 131444411 is 114444131.

It is not a de Polignac number, because 131444411 - 22 = 131444407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131444441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1341221 + ... + 1341318.

It is an arithmetic number, because the mean of its divisors is an integer number (25484130).

Almost surely, 2131444411 is an apocalyptic number.

131444411 is a deficient number, since it is larger than the sum of its proper divisors (21460369).

131444411 is an equidigital number, since it uses as much as digits as its factorization.

131444411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682553 (or 2682546 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 131444411 is about 11464.9208893913. The cubic root of 131444411 is about 508.4489735180.

Adding to 131444411 its reverse (114444131), we get a palindrome (245888542).

The spelling of 131444411 in words is "one hundred thirty-one million, four hundred forty-four thousand, four hundred eleven".

Divisors: 1 7 49 2682539 18777773 131444411