31023022123 has 2 divisors, whose sum is σ = 31023022124. Its totient is φ = 31023022122.

The previous prime is 31023022099. The next prime is 31023022159. The reversal of 31023022123 is 32122032013.

It is a weak prime.

It is an emirp because it is prime and its reverse (32122032013) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31023022123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31023022123.

It is not a weakly prime, because it can be changed into another prime (31023023123) 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, 15511511061 + 15511511062.

It is an arithmetic number, because the mean of its divisors is an integer number (15511511062).

Almost surely, 2^31023022123 is an apocalyptic number.

31023022123 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023022123 is an equidigital number, since it uses as much as digits as its factorization.

31023022123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31023022123 its reverse (32122032013), we get a palindrome (63145054136).

The spelling of 31023022123 in words is "thirty-one billion, twenty-three million, twenty-two thousand, one hundred twenty-three".