31320402430321 has 8 divisors (see below), whose sum is σ = 31374828792000. Its totient is φ = 31265983198320.

The previous prime is 31320402430319. The next prime is 31320402430351. The reversal of 31320402430321 is 12303420402313.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31320402430321 - 2¹ = 31320402430319 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 31320402430321.

It is not an unprimeable number, because it can be changed into a prime (31320402430351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7049115 + ... + 10598623.

It is an arithmetic number, because the mean of its divisors is an integer number (3921853599000).

Almost surely, 2^{31320402430321} is an apocalyptic number.

It is an amenable number.

31320402430321 is a deficient number, since it is larger than the sum of its proper divisors (54426361679).

31320402430321 is a wasteful number, since it uses less digits than its factorization.

31320402430321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3564839.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 31320402430321 its reverse (12303420402313), we get a palindrome (43623822832634).

The spelling of 31320402430321 in words is "thirty-one trillion, three hundred twenty billion, four hundred two million, four hundred thirty thousand, three hundred twenty-one".