106321613 has 2 divisors, whose sum is σ = 106321614. Its totient is φ = 106321612.

The previous prime is 106321591. The next prime is 106321619. The reversal of 106321613 is 316123601.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100260169 + 6061444 = 10013^2 + 2462^2 .

It is a cyclic number.

It is not a de Polignac number, because 106321613 - 2¹² = 106317517 is a prime.

It is a super-2 number, since 2×106321613² = 22608570781843538, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106321619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53160806 + 53160807.

It is an arithmetic number, because the mean of its divisors is an integer number (53160807).

Almost surely, 2^106321613 is an apocalyptic number.

It is an amenable number.

106321613 is a deficient number, since it is larger than the sum of its proper divisors (1).

106321613 is an equidigital number, since it uses as much as digits as its factorization.

106321613 is an odious number, because the sum of its binary digits is odd.

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

The square root of 106321613 is about 10311.2372196551. The cubic root of 106321613 is about 473.7405052364.

The spelling of 106321613 in words is "one hundred six million, three hundred twenty-one thousand, six hundred thirteen".