1373 has 2 divisors, whose sum is σ = 1374. Its totient is φ = 1372.
The previous prime is 1367. The next prime is 1381. The reversal of 1373 is 3731.
It is a happy number.
1373 is nontrivially palindromic in base 13.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 1369 + 4 = 37^2 + 2^2 .
1373 is a truncatable prime.
It is a cyclic number.
It is not a de Polignac number, because 1373 - 28 = 1117 is a prime.
1373 is an undulating number in base 13.
It is a plaindrome in base 16.
It is a nialpdrome in base 12.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1303) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686 + 687.
It is an arithmetic number, because the mean of its divisors is an integer number (687).
It is an amenable number.
1373 is a deficient number, since it is larger than the sum of its proper divisors (1).
1373 is an equidigital number, since it uses as much as digits as its factorization.
1373 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 63, while the sum is 14.
The square root of 1373 is about 37.0540146273. The cubic root of 1373 is about 11.1145063698.
It can be divided in two parts, 13 and 73, that multiplied together give a palindrome (949).
The spelling of 1373 in words is "one thousand, three hundred seventy-three", and thus it is an iban number.
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