31222101193 has 2 divisors, whose sum is σ = 31222101194. Its totient is φ = 31222101192.

The previous prime is 31222101173. The next prime is 31222101233. The reversal of 31222101193 is 39110122213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20618662464 + 10603438729 = 143592^2 + 102973^2 .

It is a cyclic number.

It is not a de Polignac number, because 31222101193 - 2⁹ = 31222100681 is a prime.

It is not a weakly prime, because it can be changed into another prime (31222101173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15611050596 + 15611050597.

It is an arithmetic number, because the mean of its divisors is an integer number (15611050597).

Almost surely, 2^31222101193 is an apocalyptic number.

It is an amenable number.

31222101193 is a deficient number, since it is larger than the sum of its proper divisors (1).

31222101193 is an equidigital number, since it uses as much as digits as its factorization.

31222101193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 31222101193 in words is "thirty-one billion, two hundred twenty-two million, one hundred one thousand, one hundred ninety-three".