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131057 = 831579
BaseRepresentation
bin11111111111110001
320122202222
4133333301
513143212
62450425
71054043
oct377761
9218688
10131057
118a513
1263a15
1347864
1435a93
1528c72
hex1fff1

131057 has 4 divisors (see below), whose sum is σ = 132720. Its totient is φ = 129396.

The previous prime is 131041. The next prime is 131059. The reversal of 131057 is 750131.

131057 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131057 - 24 = 131041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131059) 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, 707 + ... + 872.

It is an arithmetic number, because the mean of its divisors is an integer number (33180).

2131057 is an apocalyptic number.

It is an amenable number.

131057 is a deficient number, since it is larger than the sum of its proper divisors (1663).

131057 is an equidigital number, since it uses as much as digits as its factorization.

131057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662.

The product of its (nonzero) digits is 105, while the sum is 17.

The square root of 131057 is about 362.0179553558. The cubic root of 131057 is about 50.7948958436.

Adding to 131057 its reverse (750131), we get a palindrome (881188).

The spelling of 131057 in words is "one hundred thirty-one thousand, fifty-seven".

Divisors: 1 83 1579 131057