31663563041212 has 12 divisors (see below), whose sum is σ = 58670719752960. Its totient is φ = 14900500254656.

The previous prime is 31663563041153. The next prime is 31663563041249. The reversal of 31663563041212 is 21214036536613.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232820316412 + ... + 232820316547.

It is an arithmetic number, because the mean of its divisors is an integer number (4889226646080).

Almost surely, 2^{31663563041212} is an apocalyptic number.

It is an amenable number.

31663563041212 is a deficient number, since it is larger than the sum of its proper divisors (27007156711748).

31663563041212 is a wasteful number, since it uses less digits than its factorization.

31663563041212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465640632980 (or 465640632978 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 43.

Adding to 31663563041212 its reverse (21214036536613), we get a palindrome (52877599577825).

The spelling of 31663563041212 in words is "thirty-one trillion, six hundred sixty-three billion, five hundred sixty-three million, forty-one thousand, two hundred twelve".