31331050012 has 6 divisors (see below), whose sum is σ = 54829337528. Its totient is φ = 15665525004.

The previous prime is 31331050007. The next prime is 31331050013. The reversal of 31331050012 is 21005013313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31331050013) 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 as a sum of consecutive naturals, namely, 3916381248 + ... + 3916381255.

Almost surely, 2^31331050012 is an apocalyptic number.

It is an amenable number.

31331050012 is a deficient number, since it is larger than the sum of its proper divisors (23498287516).

31331050012 is a wasteful number, since it uses less digits than its factorization.

31331050012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7832762507 (or 7832762505 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 19.

Adding to 31331050012 its reverse (21005013313), we get a palindrome (52336063325).

The spelling of 31331050012 in words is "thirty-one billion, three hundred thirty-one million, fifty thousand, twelve".