137823 has 8 divisors (see below), whose sum is σ = 210048. Its totient is φ = 78744.
The previous prime is 137803. The next prime is 137827. The reversal of 137823 is 328731.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 137823 - 25 = 137791 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 137793 and 137802.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (137827) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3261 + ... + 3302.
It is an arithmetic number, because the mean of its divisors is an integer number (26256).
137823 is a Friedman number, since it can be written as 7*3*(3^8+2*1), using all its digits and the basic arithmetic operations.
2137823 is an apocalyptic number.
137823 is a deficient number, since it is larger than the sum of its proper divisors (72225).
137823 is an equidigital number, since it uses as much as digits as its factorization.
137823 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6573.
The product of its digits is 1008, while the sum is 24.
The square root of 137823 is about 371.2452019892. The cubic root of 137823 is about 51.6543894982.
Adding to 137823 its product of digits (1008), we get a palindrome (138831).
The spelling of 137823 in words is "one hundred thirty-seven thousand, eight hundred twenty-three".
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