103391321 has 8 divisors (see below), whose sum is σ = 112881600. Its totient is φ = 93916240.

The previous prime is 103391317. The next prime is 103391359. The reversal of 103391321 is 123193301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 103391321 - 2² = 103391317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103391311) 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 in 7 ways as a sum of consecutive naturals, for example, 14135 + ... + 20163.

It is an arithmetic number, because the mean of its divisors is an integer number (14110200).

Almost surely, 2^103391321 is an apocalyptic number.

103391321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

103391321 is a deficient number, since it is larger than the sum of its proper divisors (9490279).

103391321 is a wasteful number, since it uses less digits than its factorization.

103391321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7599.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 103391321 is about 10168.1522903623. The cubic root of 103391321 is about 469.3477008159.

The spelling of 103391321 in words is "one hundred three million, three hundred ninety-one thousand, three hundred twenty-one".