321243045 has 16 divisors (see below), whose sum is σ = 515617920. Its totient is φ = 170786624.

The previous prime is 321243029. The next prime is 321243059. The reversal of 321243045 is 540342123.

It is a cyclic number.

It is not a de Polignac number, because 321243045 - 2⁴ = 321243029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29025 + ... + 38534.

It is an arithmetic number, because the mean of its divisors is an integer number (32226120).

Almost surely, 2^321243045 is an apocalyptic number.

It is an amenable number.

321243045 is a deficient number, since it is larger than the sum of its proper divisors (194374875).

321243045 is a wasteful number, since it uses less digits than its factorization.

321243045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67884.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 321243045 is about 17923.2543083002. The cubic root of 321243045 is about 684.8748914606.

Adding to 321243045 its reverse (540342123), we get a palindrome (861585168).

The spelling of 321243045 in words is "three hundred twenty-one million, two hundred forty-three thousand, forty-five".