31301221322099 has 2 divisors, whose sum is σ = 31301221322100. Its totient is φ = 31301221322098.

The previous prime is 31301221322089. The next prime is 31301221322123. The reversal of 31301221322099 is 99022312210313.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31301221322099 - 2²⁰ = 31301220273523 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (31301221322029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15650610661049 + 15650610661050.

It is an arithmetic number, because the mean of its divisors is an integer number (15650610661050).

Almost surely, 2^{31301221322099} is an apocalyptic number.

31301221322099 is a deficient number, since it is larger than the sum of its proper divisors (1).

31301221322099 is an equidigital number, since it uses as much as digits as its factorization.

31301221322099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 38.

The spelling of 31301221322099 in words is "thirty-one trillion, three hundred one billion, two hundred twenty-one million, three hundred twenty-two thousand, ninety-nine".