103402321 has 4 divisors (see below), whose sum is σ = 112802544. Its totient is φ = 94002100.

The previous prime is 103402307. The next prime is 103402357. The reversal of 103402321 is 123204301.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 123204301 = 11 ⋅11200391.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103402321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103402295 and 103402304.

It is not an unprimeable number, because it can be changed into a prime (103402301) 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, 4700095 + ... + 4700116.

It is an arithmetic number, because the mean of its divisors is an integer number (28200636).

Almost surely, 2^103402321 is an apocalyptic number.

103402321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

103402321 is a deficient number, since it is larger than the sum of its proper divisors (9400223).

103402321 is an equidigital number, since it uses as much as digits as its factorization.

103402321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9400222.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 103402321 is about 10168.6931805419. The cubic root of 103402321 is about 469.3643451582.

Adding to 103402321 its reverse (123204301), we get a palindrome (226606622).

The spelling of 103402321 in words is "one hundred three million, four hundred two thousand, three hundred twenty-one".