31023320012 has 6 divisors (see below), whose sum is σ = 54290810028. Its totient is φ = 15511660004.

The previous prime is 31023320011. The next prime is 31023320039. The reversal of 31023320012 is 21002332013.

It is not an unprimeable number, because it can be changed into a prime (31023320011) by changing a digit.

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 as a sum of consecutive naturals, namely, 3877914998 + ... + 3877915005.

It is an arithmetic number, because the mean of its divisors is an integer number (9048468338).

Almost surely, 2^31023320012 is an apocalyptic number.

It is an amenable number.

31023320012 is a deficient number, since it is larger than the sum of its proper divisors (23267490016).

31023320012 is a wasteful number, since it uses less digits than its factorization.

31023320012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7755830007 (or 7755830005 counting only the distinct ones).

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

Adding to 31023320012 its reverse (21002332013), we get a palindrome (52025652025).

The spelling of 31023320012 in words is "thirty-one billion, twenty-three million, three hundred twenty thousand, twelve".