31122330321101 has 2 divisors, whose sum is σ = 31122330321102. Its totient is φ = 31122330321100.

The previous prime is 31122330321007. The next prime is 31122330321113. The reversal of 31122330321101 is 10112303322113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20478430596100 + 10643899725001 = 4525310^2 + 3262499^2 .

It is a cyclic number.

It is not a de Polignac number, because 31122330321101 - 2¹⁴ = 31122330304717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31122330321161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15561165160550 + 15561165160551.

It is an arithmetic number, because the mean of its divisors is an integer number (15561165160551).

Almost surely, 2^{31122330321101} is an apocalyptic number.

It is an amenable number.

31122330321101 is a deficient number, since it is larger than the sum of its proper divisors (1).

31122330321101 is an equidigital number, since it uses as much as digits as its factorization.

31122330321101 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 23.

Adding to 31122330321101 its reverse (10112303322113), we get a palindrome (41234633643214).

The spelling of 31122330321101 in words is "thirty-one trillion, one hundred twenty-two billion, three hundred thirty million, three hundred twenty-one thousand, one hundred one".