31103330122201 has 4 divisors (see below), whose sum is σ = 31613220780004. Its totient is φ = 30593439464400.

The previous prime is 31103330122171. The next prime is 31103330122243. The reversal of 31103330122201 is 10222103330113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6003230122201 + 25100100000000 = 2450149^2 + 5010000^2 .

It is a cyclic number.

It is not a de Polignac number, because 31103330122201 - 2¹¹ = 31103330120153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31103337122201) 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, 254945328810 + ... + 254945328931.

It is an arithmetic number, because the mean of its divisors is an integer number (7903305195001).

Almost surely, 2^{31103330122201} is an apocalyptic number.

It is an amenable number.

31103330122201 is a deficient number, since it is larger than the sum of its proper divisors (509890657803).

31103330122201 is an equidigital number, since it uses as much as digits as its factorization.

31103330122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509890657802.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31103330122201 its reverse (10222103330113), we get a palindrome (41325433452314).

The spelling of 31103330122201 in words is "thirty-one trillion, one hundred three billion, three hundred thirty million, one hundred twenty-two thousand, two hundred one".