321120445 has 4 divisors (see below), whose sum is σ = 385344540. Its totient is φ = 256896352.

The previous prime is 321120439. The next prime is 321120461. The reversal of 321120445 is 544021123.

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 147355321 + 173765124 = 12139^2 + 13182^2 .

It is a cyclic number.

It is not a de Polignac number, because 321120445 - 2¹¹ = 321118397 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, 32112040 + ... + 32112049.

It is an arithmetic number, because the mean of its divisors is an integer number (96336135).

Almost surely, 2^321120445 is an apocalyptic number.

It is an amenable number.

321120445 is a deficient number, since it is larger than the sum of its proper divisors (64224095).

321120445 is an equidigital number, since it uses as much as digits as its factorization.

321120445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64224094.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 321120445 is about 17919.8338440958. The cubic root of 321120445 is about 684.7877545852.

Adding to 321120445 its reverse (544021123), we get a palindrome (865141568).

The spelling of 321120445 in words is "three hundred twenty-one million, one hundred twenty thousand, four hundred forty-five".