103204012321 has 4 divisors (see below), whose sum is σ = 103212699012. Its totient is φ = 103195325632.

The previous prime is 103204012291. The next prime is 103204012349. The reversal of 103204012321 is 123210402301.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 96370510096 + 6833502225 = 310436^2 + 82665^2 .

It is a cyclic number.

It is not a de Polignac number, because 103204012321 - 2²⁷ = 103069794593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103204018321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4325500 + ... + 4349293.

It is an arithmetic number, because the mean of its divisors is an integer number (25803174753).

Almost surely, 2^103204012321 is an apocalyptic number.

It is an amenable number.

103204012321 is a deficient number, since it is larger than the sum of its proper divisors (8686691).

103204012321 is an equidigital number, since it uses as much as digits as its factorization.

103204012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8686690.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 103204012321 its reverse (123210402301), we get a palindrome (226414414622).

The spelling of 103204012321 in words is "one hundred three billion, two hundred four million, twelve thousand, three hundred twenty-one".