31031112104000 has 56 divisors (see below), whose sum is σ = 76848549145368. Its totient is φ = 12412444838400.

The previous prime is 31031112103987. The next prime is 31031112104009. The reversal of 31031112104000 is 40121113013.

It can be written as a sum of positive squares in 4 ways, for example, as 8259967968256 + 22771144135744 = 2874016^2 + 4771912^2 .

It is a super-2 number, since 2×31031112104000² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31031112104000.

It is not an unprimeable number, because it can be changed into a prime (31031112104009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1939436507 + ... + 1939452506.

It is an arithmetic number, because the mean of its divisors is an integer number (1372295520453).

Almost surely, 2^{31031112104000} is an apocalyptic number.

It is an amenable number.

31031112104000 is an abundant number, since it is smaller than the sum of its proper divisors (45817437041368).

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

31031112104000 is an equidigital number, since it uses as much as digits as its factorization.

31031112104000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3878889040 (or 3878889020 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31031112104000 its reverse (40121113013), we get a palindrome (31071233217013).

The spelling of 31031112104000 in words is "thirty-one trillion, thirty-one billion, one hundred twelve million, one hundred four thousand".