103391729 has 4 divisors (see below), whose sum is σ = 118161984. Its totient is φ = 88621476.

The previous prime is 103391719. The next prime is 103391741. The reversal of 103391729 is 927193301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 103391729 - 2⁴ = 103391713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103391719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7385117 + ... + 7385130.

It is an arithmetic number, because the mean of its divisors is an integer number (29540496).

Almost surely, 2^103391729 is an apocalyptic number.

It is an amenable number.

103391729 is a deficient number, since it is larger than the sum of its proper divisors (14770255).

103391729 is an equidigital number, since it uses as much as digits as its factorization.

103391729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14770254.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 103391729 is about 10168.1723529846. The cubic root of 103391729 is about 469.3483181908.

The spelling of 103391729 in words is "one hundred three million, three hundred ninety-one thousand, seven hundred twenty-nine".