545431300321 has 2 divisors, whose sum is σ = 545431300322. Its totient is φ = 545431300320.

The previous prime is 545431300289. The next prime is 545431300331. The reversal of 545431300321 is 123003134545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 540166201600 + 5265098721 = 734960^2 + 72561^2 .

It is a cyclic number.

It is not a de Polignac number, because 545431300321 - 2⁵ = 545431300289 is a prime.

It is not a weakly prime, because it can be changed into another prime (545431300331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272715650160 + 272715650161.

It is an arithmetic number, because the mean of its divisors is an integer number (272715650161).

Almost surely, 2^545431300321 is an apocalyptic number.

It is an amenable number.

545431300321 is a deficient number, since it is larger than the sum of its proper divisors (1).

545431300321 is an equidigital number, since it uses as much as digits as its factorization.

545431300321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 545431300321 its reverse (123003134545), we get a palindrome (668434434866).

The spelling of 545431300321 in words is "five hundred forty-five billion, four hundred thirty-one million, three hundred thousand, three hundred twenty-one".