31123222233223 has 8 divisors (see below), whose sum is σ = 31235557055040. Its totient is φ = 31010898589440.

The previous prime is 31123222233203. The next prime is 31123222233239. The reversal of 31123222233223 is 32233222232113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31123222233223 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 (31123222233203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2804386 + ... + 8373232.

It is an arithmetic number, because the mean of its divisors is an integer number (3904444631880).

Almost surely, 2^{31123222233223} is an apocalyptic number.

31123222233223 is a deficient number, since it is larger than the sum of its proper divisors (112334821817).

31123222233223 is a wasteful number, since it uses less digits than its factorization.

31123222233223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5589017.

The product of its digits is 31104, while the sum is 31.

Adding to 31123222233223 its reverse (32233222232113), we get a palindrome (63356444465336).

The spelling of 31123222233223 in words is "thirty-one trillion, one hundred twenty-three billion, two hundred twenty-two million, two hundred thirty-three thousand, two hundred twenty-three".