31220203230223 has 16 divisors (see below), whose sum is σ = 35698406616576. Its totient is φ = 26746545877920.

The previous prime is 31220203230221. The next prime is 31220203230239. The reversal of 31220203230223 is 32203230202213.

It is a cyclic number.

It is not a de Polignac number, because 31220203230223 - 2¹ = 31220203230221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31220203230221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162421990 + ... + 162614092.

It is an arithmetic number, because the mean of its divisors is an integer number (2231150413536).

Almost surely, 2^{31220203230223} is an apocalyptic number.

31220203230223 is a deficient number, since it is larger than the sum of its proper divisors (4478203386353).

31220203230223 is a wasteful number, since it uses less digits than its factorization.

31220203230223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203814.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 31220203230223 its reverse (32203230202213), we get a palindrome (63423433432436).

The spelling of 31220203230223 in words is "thirty-one trillion, two hundred twenty billion, two hundred three million, two hundred thirty thousand, two hundred twenty-three".