103445142321 has 4 divisors (see below), whose sum is σ = 137926856432. Its totient is φ = 68963428212.

The previous prime is 103445142319. The next prime is 103445142329. The reversal of 103445142321 is 123241544301.

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 not a de Polignac number, because 103445142321 - 2¹ = 103445142319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103445142329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17240857051 + ... + 17240857056.

It is an arithmetic number, because the mean of its divisors is an integer number (34481714108).

Almost surely, 2^103445142321 is an apocalyptic number.

It is an amenable number.

103445142321 is a deficient number, since it is larger than the sum of its proper divisors (34481714111).

103445142321 is an equidigital number, since it uses as much as digits as its factorization.

103445142321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34481714110.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 103445142321 its reverse (123241544301), we get a palindrome (226686686622).

The spelling of 103445142321 in words is "one hundred three billion, four hundred forty-five million, one hundred forty-two thousand, three hundred twenty-one".