31110031021312 has 18 divisors (see below), whose sum is σ = 62098538484458. Its totient is φ = 15555015510528.

The previous prime is 31110031021283. The next prime is 31110031021351. The reversal of 31110031021312 is 21312013001113.

It can be written as a sum of positive squares in only one way, i.e., 20301296444416 + 10808734576896 = 4505696^2 + 3287664^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31110031021312.

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 as a sum of consecutive naturals, namely, 60761779083 + ... + 60761779594.

Almost surely, 2^{31110031021312} is an apocalyptic number.

31110031021312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31110031021312 is a deficient number, since it is larger than the sum of its proper divisors (30988507463146).

31110031021312 is an equidigital number, since it uses as much as digits as its factorization.

31110031021312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121523558693 (or 121523558679 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 31110031021312 its reverse (21312013001113), we get a palindrome (52422044022425).

The spelling of 31110031021312 in words is "thirty-one trillion, one hundred ten billion, thirty-one million, twenty-one thousand, three hundred twelve".