31304000321 has 4 divisors (see below), whose sum is σ = 34149818544. Its totient is φ = 28458182100.

The previous prime is 31304000303. The next prime is 31304000333. The reversal of 31304000321 is 12300040313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31304000321 - 2¹⁴ = 31303983937 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 31304000321.

It is not an unprimeable number, because it can be changed into a prime (31304000521) 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 3 ways as a sum of consecutive naturals, for example, 1422909095 + ... + 1422909116.

It is an arithmetic number, because the mean of its divisors is an integer number (8537454636).

Almost surely, 2^31304000321 is an apocalyptic number.

It is an amenable number.

31304000321 is a deficient number, since it is larger than the sum of its proper divisors (2845818223).

31304000321 is a wasteful number, since it uses less digits than its factorization.

31304000321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2845818222.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31304000321 its reverse (12300040313), we get a palindrome (43604040634).

The spelling of 31304000321 in words is "thirty-one billion, three hundred four million, three hundred twenty-one", and thus it is an aban number.