31321330233313 has 4 divisors (see below), whose sum is σ = 31322449559808. Its totient is φ = 31320210906820.

The previous prime is 31321330233311. The next prime is 31321330233317. The reversal of 31321330233313 is 31333203312313.

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 31321330233313 - 2¹ = 31321330233311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31321330233311) 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 3 ways as a sum of consecutive naturals, for example, 559621273 + ... + 559677238.

It is an arithmetic number, because the mean of its divisors is an integer number (7830612389952).

Almost surely, 2^{31321330233313} is an apocalyptic number.

It is an amenable number.

31321330233313 is a deficient number, since it is larger than the sum of its proper divisors (1119326495).

31321330233313 is a wasteful number, since it uses less digits than its factorization.

31321330233313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119326494.

The product of its (nonzero) digits is 26244, while the sum is 31.

Adding to 31321330233313 its reverse (31333203312313), we get a palindrome (62654533545626).

The spelling of 31321330233313 in words is "thirty-one trillion, three hundred twenty-one billion, three hundred thirty million, two hundred thirty-three thousand, three hundred thirteen".