103021013 has 2 divisors, whose sum is σ = 103021014. Its totient is φ = 103021012.

The previous prime is 103021001. The next prime is 103021033. The reversal of 103021013 is 310120301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54272689 + 48748324 = 7367^2 + 6982^2 .

It is an emirp because it is prime and its reverse (310120301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103021013 - 2⁴ = 103020997 is a prime.

It is a super-2 number, since 2×103021013² = 21226658239092338, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 103020985 and 103021003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103021033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51510506 + 51510507.

It is an arithmetic number, because the mean of its divisors is an integer number (51510507).

Almost surely, 2^103021013 is an apocalyptic number.

It is an amenable number.

103021013 is a deficient number, since it is larger than the sum of its proper divisors (1).

103021013 is an equidigital number, since it uses as much as digits as its factorization.

103021013 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 103021013 is about 10149.9267485041. The cubic root of 103021013 is about 468.7866894423.

Adding to 103021013 its reverse (310120301), we get a palindrome (413141314).

The spelling of 103021013 in words is "one hundred three million, twenty-one thousand, thirteen".