31023203312 has 20 divisors (see below), whose sum is σ = 60110416080. Its totient is φ = 15510837888.

The previous prime is 31023203291. The next prime is 31023203317. The reversal of 31023203312 is 21330232013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023203317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435764 + ... + 501932.

It is an arithmetic number, because the mean of its divisors is an integer number (3005520804).

Almost surely, 2^31023203312 is an apocalyptic number.

It is an amenable number.

31023203312 is a deficient number, since it is larger than the sum of its proper divisors (29087212768).

31023203312 is a wasteful number, since it uses less digits than its factorization.

31023203312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95480 (or 95474 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31023203312 its reverse (21330232013), we get a palindrome (52353435325).

The spelling of 31023203312 in words is "thirty-one billion, twenty-three million, two hundred three thousand, three hundred twelve".