31231303330012 has 6 divisors (see below), whose sum is σ = 54654780827528. Its totient is φ = 15615651665004.

The previous prime is 31231303329991. The next prime is 31231303330037. The reversal of 31231303330012 is 21003330313213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3903912916248 + ... + 3903912916255.

Almost surely, 2^{31231303330012} is an apocalyptic number.

It is an amenable number.

31231303330012 is a deficient number, since it is larger than the sum of its proper divisors (23423477497516).

31231303330012 is a wasteful number, since it uses less digits than its factorization.

31231303330012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7807825832507 (or 7807825832505 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 31231303330012 its reverse (21003330313213), we get a palindrome (52234633643225).

The spelling of 31231303330012 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred three million, three hundred thirty thousand, twelve".