103030312321 has 4 divisors (see below), whose sum is σ = 104974280532. Its totient is φ = 101086344112.

The previous prime is 103030312267. The next prime is 103030312367. The reversal of 103030312321 is 123213030301.

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 66180135025 + 36850177296 = 257255^2 + 191964^2 .

It is a cyclic number.

It is not a de Polignac number, because 103030312321 - 2³⁵ = 68670573953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103030312621) 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, 971984026 + ... + 971984131.

It is an arithmetic number, because the mean of its divisors is an integer number (26243570133).

Almost surely, 2^103030312321 is an apocalyptic number.

It is an amenable number.

103030312321 is a deficient number, since it is larger than the sum of its proper divisors (1943968211).

103030312321 is an equidigital number, since it uses as much as digits as its factorization.

103030312321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943968210.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 103030312321 its reverse (123213030301), we get a palindrome (226243342622).

The spelling of 103030312321 in words is "one hundred three billion, thirty million, three hundred twelve thousand, three hundred twenty-one".