103010321 has 2 divisors, whose sum is σ = 103010322. Its totient is φ = 103010320.

The previous prime is 103010317. The next prime is 103010351. The reversal of 103010321 is 123010301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65934400 + 37075921 = 8120^2 + 6089^2 .

It is an emirp because it is prime and its reverse (123010301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103010321 - 2² = 103010317 is a prime.

It is a super-2 number, since 2×103010321² = 21222252465046082, which contains 22 as substring.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (103010351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51505160 + 51505161.

It is an arithmetic number, because the mean of its divisors is an integer number (51505161).

Almost surely, 2^103010321 is an apocalyptic number.

It is an amenable number.

103010321 is a deficient number, since it is larger than the sum of its proper divisors (1).

103010321 is an equidigital number, since it uses as much as digits as its factorization.

103010321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 103010321 is about 10149.4000315290. The cubic root of 103010321 is about 468.7704712600.

Adding to 103010321 its reverse (123010301), we get a palindrome (226020622).

The spelling of 103010321 in words is "one hundred three million, ten thousand, three hundred twenty-one".