103102020321 has 4 divisors (see below), whose sum is σ = 137469360432. Its totient is φ = 68734680212.

The previous prime is 103102020247. The next prime is 103102020341. The reversal of 103102020321 is 123020201301.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103102020321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103102020321.

It is not an unprimeable number, because it can be changed into a prime (103102020341) 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, 17183670051 + ... + 17183670056.

It is an arithmetic number, because the mean of its divisors is an integer number (34367340108).

Almost surely, 2^103102020321 is an apocalyptic number.

It is an amenable number.

103102020321 is a deficient number, since it is larger than the sum of its proper divisors (34367340111).

103102020321 is an equidigital number, since it uses as much as digits as its factorization.

103102020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34367340110.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 103102020321 its reverse (123020201301), we get a palindrome (226122221622).

The spelling of 103102020321 in words is "one hundred three billion, one hundred two million, twenty thousand, three hundred twenty-one".