103021613 has 2 divisors, whose sum is σ = 103021614. Its totient is φ = 103021612.

The previous prime is 103021573. The next prime is 103021687. The reversal of 103021613 is 316120301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69172489 + 33849124 = 8317^2 + 5818^2 .

It is a cyclic number.

It is not a de Polignac number, because 103021613 - 2¹² = 103017517 is a prime.

It is a super-2 number, since 2×103021613² = 21226905490243538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 103021591 and 103021600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103021693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51510806 + 51510807.

It is an arithmetic number, because the mean of its divisors is an integer number (51510807).

Almost surely, 2^103021613 is an apocalyptic number.

It is an amenable number.

103021613 is a deficient number, since it is larger than the sum of its proper divisors (1).

103021613 is an equidigital number, since it uses as much as digits as its factorization.

103021613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 103021613 is about 10149.9563053247. The cubic root of 103021613 is about 468.7875995203.

Adding to 103021613 its reverse (316120301), we get a palindrome (419141914).

The spelling of 103021613 in words is "one hundred three million, twenty-one thousand, six hundred thirteen".