103105649 has 2 divisors, whose sum is σ = 103105650. Its totient is φ = 103105648.

The previous prime is 103105637. The next prime is 103105687. The reversal of 103105649 is 946501301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94926049 + 8179600 = 9743^2 + 2860^2 .

It is a cyclic number.

It is not a de Polignac number, because 103105649 - 2²⁴ = 86328433 is a prime.

It is a super-2 number, since 2×103105649² = 21261549711422402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (103105049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51552824 + 51552825.

It is an arithmetic number, because the mean of its divisors is an integer number (51552825).

Almost surely, 2^103105649 is an apocalyptic number.

It is an amenable number.

103105649 is a deficient number, since it is larger than the sum of its proper divisors (1).

103105649 is an equidigital number, since it uses as much as digits as its factorization.

103105649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 103105649 is about 10154.0951837177. The cubic root of 103105649 is about 468.9150301527.

The spelling of 103105649 in words is "one hundred three million, one hundred five thousand, six hundred forty-nine".