321013045 has 4 divisors (see below), whose sum is σ = 385215660. Its totient is φ = 256810432.

The previous prime is 321013039. The next prime is 321013097. The reversal of 321013045 is 540310123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540310123 = 61 ⋅8857543.

It can be written as a sum of positive squares in 2 ways, for example, as 103184964 + 217828081 = 10158^2 + 14759^2 .

It is a cyclic number.

It is not a de Polignac number, because 321013045 - 2⁷ = 321012917 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32101300 + ... + 32101309.

It is an arithmetic number, because the mean of its divisors is an integer number (96303915).

Almost surely, 2^321013045 is an apocalyptic number.

It is an amenable number.

321013045 is a deficient number, since it is larger than the sum of its proper divisors (64202615).

321013045 is an equidigital number, since it uses as much as digits as its factorization.

321013045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64202614.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 321013045 is about 17916.8369139198. The cubic root of 321013045 is about 684.7114027502.

Adding to 321013045 its reverse (540310123), we get a palindrome (861323168).

The spelling of 321013045 in words is "three hundred twenty-one million, thirteen thousand, forty-five".