31233320313 has 16 divisors (see below), whose sum is σ = 45009765696. Its totient is φ = 19151110080.

The previous prime is 31233320311. The next prime is 31233320369. The reversal of 31233320313 is 31302333213.

It is not a de Polignac number, because 31233320313 - 2¹ = 31233320311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31233320311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1434783 + ... + 1456388.

It is an arithmetic number, because the mean of its divisors is an integer number (2813110356).

Almost surely, 2^31233320313 is an apocalyptic number.

It is an amenable number.

31233320313 is a deficient number, since it is larger than the sum of its proper divisors (13776445383).

31233320313 is a wasteful number, since it uses less digits than its factorization.

31233320313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891464.

The product of its (nonzero) digits is 2916, while the sum is 24.

Adding to 31233320313 its reverse (31302333213), we get a palindrome (62535653526).

The spelling of 31233320313 in words is "thirty-one billion, two hundred thirty-three million, three hundred twenty thousand, three hundred thirteen".