4245313321 has 32 divisors (see below), whose sum is σ = 4739447808. Its totient is φ = 3784734720.

The previous prime is 4245313283. The next prime is 4245313333. The reversal of 4245313321 is 1233135424.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4245313321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4245313321.

It is not an unprimeable number, because it can be changed into a prime (4245311321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6270435 + ... + 6271111.

It is an arithmetic number, because the mean of its divisors is an integer number (148107744).

Almost surely, 2^4245313321 is an apocalyptic number.

It is an amenable number.

4245313321 is a deficient number, since it is larger than the sum of its proper divisors (494134487).

4245313321 is a wasteful number, since it uses less digits than its factorization.

4245313321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961.

The product of its digits is 8640, while the sum is 28.

The square root of 4245313321 is about 65156.0689498684. The cubic root of 4245313321 is about 1619.2102690688.

Adding to 4245313321 its reverse (1233135424), we get a palindrome (5478448745).

The spelling of 4245313321 in words is "four billion, two hundred forty-five million, three hundred thirteen thousand, three hundred twenty-one".