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131947 is a prime number
BaseRepresentation
bin100000001101101011
320200222221
4200031223
513210242
62454511
71056454
oct401553
9220887
10131947
1190152
1264437
134809a
143612b
1529167
hex2036b

131947 has 2 divisors, whose sum is σ = 131948. Its totient is φ = 131946.

The previous prime is 131941. The next prime is 131959. The reversal of 131947 is 749131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131947 - 23 = 131939 is a prime.

It is not a weakly prime, because it can be changed into another prime (131941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65973 + 65974.

It is an arithmetic number, because the mean of its divisors is an integer number (65974).

2131947 is an apocalyptic number.

131947 is a deficient number, since it is larger than the sum of its proper divisors (1).

131947 is an equidigital number, since it uses as much as digits as its factorization.

131947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 25.

The square root of 131947 is about 363.2450963193. The cubic root of 131947 is about 50.9096182111.

The spelling of 131947 in words is "one hundred thirty-one thousand, nine hundred forty-seven".