103920413 has 2 divisors, whose sum is σ = 103920414. Its totient is φ = 103920412.

The previous prime is 103920409. The next prime is 103920449. The reversal of 103920413 is 314029301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71453209 + 32467204 = 8453^2 + 5698^2 .

It is a cyclic number.

It is not a de Polignac number, because 103920413 - 2² = 103920409 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103920403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51960206 + 51960207.

It is an arithmetic number, because the mean of its divisors is an integer number (51960207).

Almost surely, 2^103920413 is an apocalyptic number.

It is an amenable number.

103920413 is a deficient number, since it is larger than the sum of its proper divisors (1).

103920413 is an equidigital number, since it uses as much as digits as its factorization.

103920413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 103920413 is about 10194.1362066631. The cubic root of 103920413 is about 470.1469481660.

Adding to 103920413 its reverse (314029301), we get a palindrome (417949714).

The spelling of 103920413 in words is "one hundred three million, nine hundred twenty thousand, four hundred thirteen".