31032312312 has 64 divisors (see below), whose sum is σ = 82167864480. Its totient is φ = 9732841472.

The previous prime is 31032312307. The next prime is 31032312341. The reversal of 31032312312 is 21321323013.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 1775488 + ... + 1792880.

Almost surely, 2^31032312312 is an apocalyptic number.

It is an amenable number.

31032312312 is an abundant number, since it is smaller than the sum of its proper divisors (51135552168).

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

31032312312 is a wasteful number, since it uses less digits than its factorization.

31032312312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21792 (or 21788 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31032312312 its reverse (21321323013), we get a palindrome (52353635325).

The spelling of 31032312312 in words is "thirty-one billion, thirty-two million, three hundred twelve thousand, three hundred twelve".