31330221112 has 64 divisors (see below), whose sum is σ = 59951324160. Its totient is φ = 15347491200.

The previous prime is 31330221101. The next prime is 31330221157. The reversal of 31330221112 is 21112203313.

It is a self number, because there is not a number n which added to its sum of digits gives 31330221112.

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, 38631187 + ... + 38631997.

It is an arithmetic number, because the mean of its divisors is an integer number (936739440).

Almost surely, 2^31330221112 is an apocalyptic number.

It is an amenable number.

31330221112 is a deficient number, since it is larger than the sum of its proper divisors (28621103048).

31330221112 is a wasteful number, since it uses less digits than its factorization.

31330221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364 (or 1360 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31330221112 its reverse (21112203313), we get a palindrome (52442424425).

It can be divided in two parts, 313 and 30221112, that added together give a triangular number (30221425 = T₇₇₇₄).

The spelling of 31330221112 in words is "thirty-one billion, three hundred thirty million, two hundred twenty-one thousand, one hundred twelve".