31210440221133 has 6 divisors (see below), whose sum is σ = 45081746986094. Its totient is φ = 20806960147416.

The previous prime is 31210440221131. The next prime is 31210440221137. The reversal of 31210440221133 is 33112204401213.

31210440221133 is a `hidden beast` number, since 3 + 1 + 2 + 1 + 0 + 440 + 2 + 211 + 3 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 30136443770889 + 1073996450244 = 5489667^2 + 1036338^2 .

It is not a de Polignac number, because 31210440221133 - 2¹ = 31210440221131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31210440221097 and 31210440221106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31210440221131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1733913345610 + ... + 1733913345627.

Almost surely, 2^{31210440221133} is an apocalyptic number.

It is an amenable number.

31210440221133 is a deficient number, since it is larger than the sum of its proper divisors (13871306764961).

31210440221133 is a wasteful number, since it uses less digits than its factorization.

31210440221133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3467826691243 (or 3467826691240 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 31210440221133 its reverse (33112204401213), we get a palindrome (64322644622346).

The spelling of 31210440221133 in words is "thirty-one trillion, two hundred ten billion, four hundred forty million, two hundred twenty-one thousand, one hundred thirty-three".