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131379 = 343793
BaseRepresentation
bin100000000100110011
320200012220
4200010303
513201004
62452123
71055013
oct400463
9220186
10131379
118a786
1264043
1347a51
1435c43
1528dd9
hex20133

131379 has 4 divisors (see below), whose sum is σ = 175176. Its totient is φ = 87584.

The previous prime is 131371. The next prime is 131381. The reversal of 131379 is 973131.

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 131379 - 23 = 131371 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (131371) 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, 21894 + ... + 21899.

It is an arithmetic number, because the mean of its divisors is an integer number (43794).

2131379 is an apocalyptic number.

131379 is a deficient number, since it is larger than the sum of its proper divisors (43797).

131379 is an equidigital number, since it uses as much as digits as its factorization.

131379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43796.

The product of its digits is 567, while the sum is 24.

The square root of 131379 is about 362.4624118443. The cubic root of 131379 is about 50.8364619293.

The spelling of 131379 in words is "one hundred thirty-one thousand, three hundred seventy-nine".

Divisors: 1 3 43793 131379