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131332711 = 472794313
BaseRepresentation
bin1111101001111…
…11101001100111
3100011010101121111
413310333221213
5232110121321
621010525451
73153211126
oct764775147
9304111544
10131332711
1168152234
1237b96887
1321294283
1413629abd
15b7e35e1
hex7d3fa67

131332711 has 4 divisors (see below), whose sum is σ = 134127072. Its totient is φ = 128538352.

The previous prime is 131332697. The next prime is 131332727. The reversal of 131332711 is 117233131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131332711 - 219 = 130808423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131332741) 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 3 ways as a sum of consecutive naturals, for example, 1397110 + ... + 1397203.

It is an arithmetic number, because the mean of its divisors is an integer number (33531768).

Almost surely, 2131332711 is an apocalyptic number.

131332711 is a deficient number, since it is larger than the sum of its proper divisors (2794361).

131332711 is an equidigital number, since it uses as much as digits as its factorization.

131332711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2794360.

The product of its digits is 378, while the sum is 22.

The square root of 131332711 is about 11460.0484728469. The cubic root of 131332711 is about 508.3049079390.

Adding to 131332711 its reverse (117233131), we get a palindrome (248565842).

The spelling of 131332711 in words is "one hundred thirty-one million, three hundred thirty-two thousand, seven hundred eleven".

Divisors: 1 47 2794313 131332711