31320203012 has 12 divisors (see below), whose sum is σ = 62640406080. Its totient is φ = 13422944136.

The previous prime is 31320203009. The next prime is 31320203059. The reversal of 31320203012 is 21030202313.

31320203012 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 559289312 + ... + 559289367.

It is an arithmetic number, because the mean of its divisors is an integer number (5220033840).

Almost surely, 2^31320203012 is an apocalyptic number.

It is an amenable number.

31320203012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31320203012 is a wasteful number, since it uses less digits than its factorization.

31320203012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118578690 (or 1118578688 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31320203012 its reverse (21030202313), we get a palindrome (52350405325).

The spelling of 31320203012 in words is "thirty-one billion, three hundred twenty million, two hundred three thousand, twelve".