103431545321 has 4 divisors (see below), whose sum is σ = 111387818052. Its totient is φ = 95475272592.

The previous prime is 103431545309. The next prime is 103431545341. The reversal of 103431545321 is 123545134301.

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 21678439696 + 81753105625 = 147236^2 + 285925^2 .

It is a cyclic number.

It is not a de Polignac number, because 103431545321 - 2¹⁸ = 103431283177 is a prime.

It is a super-3 number, since 3×103431545321³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103431545341) 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, 3978136346 + ... + 3978136371.

It is an arithmetic number, because the mean of its divisors is an integer number (27846954513).

Almost surely, 2^103431545321 is an apocalyptic number.

It is an amenable number.

103431545321 is a deficient number, since it is larger than the sum of its proper divisors (7956272731).

103431545321 is an equidigital number, since it uses as much as digits as its factorization.

103431545321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7956272730.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 103431545321 its reverse (123545134301), we get a palindrome (226976679622).

The spelling of 103431545321 in words is "one hundred three billion, four hundred thirty-one million, five hundred forty-five thousand, three hundred twenty-one".