31230113203321 has 8 divisors (see below), whose sum is σ = 31270032980424. Its totient is φ = 31190195270400.

The previous prime is 31230113203309. The next prime is 31230113203363. The reversal of 31230113203321 is 12330231103213.

It can be written as a sum of positive squares in 4 ways, for example, as 617739409296 + 30612373794025 = 785964^2 + 5532845^2 .

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 31230113203321 - 2⁹ = 31230113202809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31230113243321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35188401 + ... + 36064993.

It is an arithmetic number, because the mean of its divisors is an integer number (3908754122553).

Almost surely, 2^{31230113203321} is an apocalyptic number.

It is an amenable number.

31230113203321 is a deficient number, since it is larger than the sum of its proper divisors (39919777103).

31230113203321 is an equidigital number, since it uses as much as digits as its factorization.

31230113203321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922091.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31230113203321 its reverse (12330231103213), we get a palindrome (43560344306534).

The spelling of 31230113203321 in words is "thirty-one trillion, two hundred thirty billion, one hundred thirteen million, two hundred three thousand, three hundred twenty-one".