104731321 has 2 divisors, whose sum is σ = 104731322. Its totient is φ = 104731320.

The previous prime is 104731303. The next prime is 104731337. The reversal of 104731321 is 123137401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75690000 + 29041321 = 8700^2 + 5389^2 .

It is an emirp because it is prime and its reverse (123137401) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104731321 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 104731292 and 104731301.

It is not a weakly prime, because it can be changed into another prime (104731381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52365660 + 52365661.

It is an arithmetic number, because the mean of its divisors is an integer number (52365661).

Almost surely, 2^104731321 is an apocalyptic number.

It is an amenable number.

104731321 is a deficient number, since it is larger than the sum of its proper divisors (1).

104731321 is an equidigital number, since it uses as much as digits as its factorization.

104731321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 104731321 is about 10233.8321756808. The cubic root of 104731321 is about 471.3666589865.

Adding to 104731321 its reverse (123137401), we get a palindrome (227868722).

The spelling of 104731321 in words is "one hundred four million, seven hundred thirty-one thousand, three hundred twenty-one".