321252541345 has 8 divisors (see below), whose sum is σ = 385942625064. Its totient is φ = 256708982784.

The previous prime is 321252541327. The next prime is 321252541349. The reversal of 321252541345 is 543145252123.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 37224300096 + 284028241249 = 192936^2 + 532943^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 321252541345 - 2¹⁹ = 321252017057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321252541349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36626464 + ... + 36635233.

It is an arithmetic number, because the mean of its divisors is an integer number (48242828133).

Almost surely, 2^321252541345 is an apocalyptic number.

It is an amenable number.

321252541345 is a deficient number, since it is larger than the sum of its proper divisors (64690083719).

321252541345 is an equidigital number, since it uses as much as digits as its factorization.

321252541345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73262579.

The product of its digits is 144000, while the sum is 37.

Adding to 321252541345 its reverse (543145252123), we get a palindrome (864397793468).

The spelling of 321252541345 in words is "three hundred twenty-one billion, two hundred fifty-two million, five hundred forty-one thousand, three hundred forty-five".