31123222233203 has 2 divisors, whose sum is σ = 31123222233204. Its totient is φ = 31123222233202.

The previous prime is 31123222233179. The next prime is 31123222233239. The reversal of 31123222233203 is 30233222232113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31123222233203 - 2³⁶ = 31054502756467 is a prime.

It is not a weakly prime, because it can be changed into another prime (31123222833203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15561611116601 + 15561611116602.

It is an arithmetic number, because the mean of its divisors is an integer number (15561611116602).

Almost surely, 2^{31123222233203} is an apocalyptic number.

31123222233203 is a deficient number, since it is larger than the sum of its proper divisors (1).

31123222233203 is an equidigital number, since it uses as much as digits as its factorization.

31123222233203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 31123222233203 its reverse (30233222232113), we get a palindrome (61356444465316).

The spelling of 31123222233203 in words is "thirty-one trillion, one hundred twenty-three billion, two hundred twenty-two million, two hundred thirty-three thousand, two hundred three".