31133110223 has 2 divisors, whose sum is σ = 31133110224. Its totient is φ = 31133110222.

The previous prime is 31133110219. The next prime is 31133110271. The reversal of 31133110223 is 32201133113.

It is a weak prime.

It is an emirp because it is prime and its reverse (32201133113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31133110223 - 2² = 31133110219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31133110195 and 31133110204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31133110823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15566555111 + 15566555112.

It is an arithmetic number, because the mean of its divisors is an integer number (15566555112).

Almost surely, 2^31133110223 is an apocalyptic number.

31133110223 is a deficient number, since it is larger than the sum of its proper divisors (1).

31133110223 is an equidigital number, since it uses as much as digits as its factorization.

31133110223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31133110223 its reverse (32201133113), we get a palindrome (63334243336).

The spelling of 31133110223 in words is "thirty-one billion, one hundred thirty-three million, one hundred ten thousand, two hundred twenty-three".