31222101233 has 2 divisors, whose sum is σ = 31222101234. Its totient is φ = 31222101232.

The previous prime is 31222101193. The next prime is 31222101283. The reversal of 31222101233 is 33210122213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29151123169 + 2070978064 = 170737^2 + 45508^2 .

It is a cyclic number.

It is not a de Polignac number, because 31222101233 - 2¹⁴ = 31222084849 is a prime.

It is not a weakly prime, because it can be changed into another prime (31222101283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15611050616 + 15611050617.

It is an arithmetic number, because the mean of its divisors is an integer number (15611050617).

Almost surely, 2^31222101233 is an apocalyptic number.

It is an amenable number.

31222101233 is a deficient number, since it is larger than the sum of its proper divisors (1).

31222101233 is an equidigital number, since it uses as much as digits as its factorization.

31222101233 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 20.

Adding to 31222101233 its reverse (33210122213), we get a palindrome (64432223446).

The spelling of 31222101233 in words is "thirty-one billion, two hundred twenty-two million, one hundred one thousand, two hundred thirty-three".