31223220316003 has 2 divisors, whose sum is σ = 31223220316004. Its totient is φ = 31223220316002.

The previous prime is 31223220315929. The next prime is 31223220316019. The reversal of 31223220316003 is 30061302232213.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31223220316003 is a prime.

It is not a weakly prime, because it can be changed into another prime (31223220326003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15611610158001 + 15611610158002.

It is an arithmetic number, because the mean of its divisors is an integer number (15611610158002).

Almost surely, 2^{31223220316003} is an apocalyptic number.

31223220316003 is a deficient number, since it is larger than the sum of its proper divisors (1).

31223220316003 is an equidigital number, since it uses as much as digits as its factorization.

31223220316003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 31223220316003 its reverse (30061302232213), we get a palindrome (61284522548216).

The spelling of 31223220316003 in words is "thirty-one trillion, two hundred twenty-three billion, two hundred twenty million, three hundred sixteen thousand, three".