103020321 has 8 divisors (see below), whose sum is σ = 141073024. Its totient is φ = 66823920.

The previous prime is 103020317. The next prime is 103020329. The reversal of 103020321 is 123020301.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 103020321 - 2² = 103020317 is a prime.

It is a super-2 number, since 2×103020321² = 21226373077886082, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 103020297 and 103020306.

It is not an unprimeable number, because it can be changed into a prime (103020329) 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, 463945 + ... + 464166.

It is an arithmetic number, because the mean of its divisors is an integer number (17634128).

Almost surely, 2^103020321 is an apocalyptic number.

It is an amenable number.

103020321 is a deficient number, since it is larger than the sum of its proper divisors (38052703).

103020321 is an equidigital number, since it uses as much as digits as its factorization.

103020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928151.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 103020321 is about 10149.8926595309. The cubic root of 103020321 is about 468.7856398146.

Adding to 103020321 its reverse (123020301), we get a palindrome (226040622).

The spelling of 103020321 in words is "one hundred three million, twenty thousand, three hundred twenty-one".