31105254223 has 2 divisors, whose sum is σ = 31105254224. Its totient is φ = 31105254222.

The previous prime is 31105254221. The next prime is 31105254227. The reversal of 31105254223 is 32245250113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31105254223 - 2¹ = 31105254221 is a prime.

Together with 31105254221, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 31105254191 and 31105254200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31105254221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15552627111 + 15552627112.

It is an arithmetic number, because the mean of its divisors is an integer number (15552627112).

Almost surely, 2^31105254223 is an apocalyptic number.

31105254223 is a deficient number, since it is larger than the sum of its proper divisors (1).

31105254223 is an equidigital number, since it uses as much as digits as its factorization.

31105254223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 31105254223 in words is "thirty-one billion, one hundred five million, two hundred fifty-four thousand, two hundred twenty-three".