31132223123 has 2 divisors, whose sum is σ = 31132223124. Its totient is φ = 31132223122.

The previous prime is 31132223117. The next prime is 31132223167. The reversal of 31132223123 is 32132223113.

It is a weak prime.

It is an emirp because it is prime and its reverse (32132223113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31132223123 - 2⁸ = 31132222867 is a prime.

It is not a weakly prime, because it can be changed into another prime (31132223723) 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, 15566111561 + 15566111562.

It is an arithmetic number, because the mean of its divisors is an integer number (15566111562).

Almost surely, 2^31132223123 is an apocalyptic number.

31132223123 is a deficient number, since it is larger than the sum of its proper divisors (1).

31132223123 is an equidigital number, since it uses as much as digits as its factorization.

31132223123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 23.

Adding to 31132223123 its reverse (32132223113), we get a palindrome (63264446236).

The spelling of 31132223123 in words is "thirty-one billion, one hundred thirty-two million, two hundred twenty-three thousand, one hundred twenty-three".