31300320321 has 16 divisors (see below), whose sum is σ = 49098542400. Its totient is φ = 19639416384.

The previous prime is 31300320313. The next prime is 31300320323. The reversal of 31300320321 is 12302300313.

31300320321 is a `hidden beast` number, since 313 + 0 + 0 + 32 + 0 + 321 = 666.

It is not a de Polignac number, because 31300320321 - 2³ = 31300320313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31300320294 and 31300320303.

It is not an unprimeable number, because it can be changed into a prime (31300320323) 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 15 ways as a sum of consecutive naturals, for example, 34095751 + ... + 34096668.

It is an arithmetic number, because the mean of its divisors is an integer number (3068658900).

Almost surely, 2^31300320321 is an apocalyptic number.

It is an amenable number.

31300320321 is a deficient number, since it is larger than the sum of its proper divisors (17798222079).

31300320321 is a wasteful number, since it uses less digits than its factorization.

31300320321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68192445 (or 68192439 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 31300320321 its reverse (12302300313), we get a palindrome (43602620634).

The spelling of 31300320321 in words is "thirty-one billion, three hundred million, three hundred twenty thousand, three hundred twenty-one".