321400103 has 4 divisors (see below), whose sum is σ = 328874568. Its totient is φ = 313925640.

The previous prime is 321400099. The next prime is 321400117. The reversal of 321400103 is 301004123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301004123 = 7 ⋅43000589.

It is a cyclic number.

It is not a de Polignac number, because 321400103 - 2² = 321400099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321400193) 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, 3737168 + ... + 3737253.

It is an arithmetic number, because the mean of its divisors is an integer number (82218642).

Almost surely, 2^321400103 is an apocalyptic number.

321400103 is a deficient number, since it is larger than the sum of its proper divisors (7474465).

321400103 is an equidigital number, since it uses as much as digits as its factorization.

321400103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7474464.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 321400103 is about 17927.6351758953. The cubic root of 321400103 is about 684.9864866711.

Adding to 321400103 its reverse (301004123), we get a palindrome (622404226).

The spelling of 321400103 in words is "three hundred twenty-one million, four hundred thousand, one hundred three".